drew: okay, here are my thoughts. This is purely from a marketing point-of-view, not from an artistic point of view. I've had feedback like this about a lot of bands in label a&r meetings (when I suggested a project or brought in a band), so it's not me trying to be an ass.
1) your website is bandcamp - get a proper website. Wordpress is your friend. You can keep bandcamp but incorporate it into the homepage. My keyboardist's own band did that really well:
http://www.xp8.org/
2) the bandname is a problem, I can barely pronounce it and I'm a native speaker of the English language. Good/simple/clever/well-sounding names are worth their weight in gold. Since it apparently has come up before: change it. It's not like you've already build a massive fanbase under the name. Those fans that are actually following you can be easily alerted to the name change via FB or the newsletter.
3) I listened to the first song on your bandcamp page "Fractal World". It doesn't have vocals. At that point I assumed you are an instrumental band. At that point I stopped caring (like 99,9% of the world).
4) I then listened to the second song "Exegis". Yay! Vocals! They don't sound too good in the beginning (just the timbre of the voice) but I kept listening only to be dragged through 3-4 more minutes without a vocal hook/catchy chorus. At that point I stopped the song (99,9% of the world would have stopped MUCH earlier).
5) I then listened to the third song "Calligraphy" and it is another instrumental. At that point I decided to not listen to other songs anymore.
6) If you don't have vocals, you'll never have an audience these days.
7) You label yourself "art-metal london metal post-metal post-rock ambient instrumental progressive progressive metal" - lose the metal. Your music is extremely un-metal when most people these days assume that metal is something like Machine Head, Periphery, Rammstein or heavier. Call your self "art rock, indie-prog, post rock". It's much closer to what I heard. The majority of metal fans and metal journalists won't have the patience for your stuff.
8) You don't have an image. The bandname says nothing about the band. The band pictures are medium-quality (which isn't enough these days) and show dudes standing around in settings that (at first glance) don't tell me anything about the band. The band look is inconsistent. All in all the band pictures don't make me want to check out the music and they don't transport a vibe or a "message". Invest in a good photographer and a stylist. The guy with the black clothes and the lack of hair might want to wear a hat/cap/beanie next time.
9) Aside from the bandname or pictures: what is the interesting part about your band and your music? Can you tell me in one sentence what your music sounds like? I always say "Faderhead sounds like The Incredible Hulk is fucking Paris Hilton ... it's kinda like a mixture of Daft Punk and Rammstein". Nothing on your website/facebook etc. gives me a hint to what your image could be. You gotta find something. Otherwise you'll just be another band and the person you met in the club who was interested in your band for a second now can't remember anything but "ah, it's something about a bridge".
10) I'm aware of the fact that you are not going for a poppy, mainstream sound or audience, but even your audience has "a style". Find it, adapt your look to it or invent your own style and force it on the audience. Anything is better than "no style". I just looked at the website and pictures of Tool (who your music reminded me of) and obviously got shamed because their site looks like shit and the recent band pics are just them bullshitting in ridiculous settings, but they are huge now, so they don't need to care. However, when they started out, Tool were "the band with the awesome stop-motion videos, omg, they are rad!". So they had a clear image.
11) Write 2 songs that are 3-4 minutes long. Have the vocals start after 20 seconds and the first chorus after 50 seconds. Yea, I know that your songs are all long, but nobody who has never heard of a band wants to sit through 3 minutes of intro. If you place these shorter songs in the web player at #1 and #2 you might convince the listener that your 10 minute instrumentals are worth listening to. Although I doubt it, cause people just don't like instrumentals.
12) Stop writing instrumentals. People don't have the attention span or the interest. Your singer doesn't sound bad. He doesn't sound great either but if you produce it properly, it can work really well. Trust me, I know, I'm a crappy singer! If you write long songs with few vocals, you'll simply have to keep playing tiny gigs just for the fun of playing the music you love.
13) Write lyrics about things that people actually care about: love, fear, life, anger, happiness, dancing. Don't write Dream Theater lyrics about "shadow's passing on the liquid wall" - which people can't relate to.
14) Go associate online with acts that attract the clientele that listens to your music. Find fans of bands like Tool or weirder acts like Nick Cave or Einstürzende Neubauten. Their audience often doesn't like mainstream music, maybe they can latch on to your style. You are definitely wrong associating with metal acts.
That's what I saw at first regarding the basics. If I'm perfectly honest, from your web-presence it doesn't even appear like you are an active band. And if I think like that promoters/booking agency/labels will think the same because they are only interested in bands that can generate them money. Or they are well-meaning enthusiasts who run labels that can't really help you.
I'm not into mohawks or any of that shit, and personally, anyone who listens to an artist just because they look "cool" - well... they can eat a dick. I don't need a mohawk! 
