Go ahead. I can try to come up with something that hopefully matches your description at least partially. If it sounds awful I'll probably just forget about it, but if it ends up sounding decent we can put it on the album.
How about doing collaboration songs instead of individual songs? I came up with such structure:
0:00 –
slow doom beat intro, slow riff, grand piano transposed very low-pitch
0:15 –
increases to medium slow tempo, with atmospheric guitar solo, keyboard background choir
descending from medium to low pitch
1:00 –
intense orchestral hit seizes moment, ultra fast bass, beat goes about 140bpm, technical guitar (riff 2) starts
1:05 –
ultra fast double bass
1:15 –
verse 1: low grand piano supporting riff 2, 140bpm
1:30 –
instrumental chorus melody, 200bpm
1:45 –
verse 2: riff 3, 140bpm
2:00 –
riff 2,
ascending keyboard choir while beat
increasing to 200bpm, whispering vocals
2:10 –
doom riff 1
2:15 –
dark electro keyboard, 50bpm doom section with intro riff as background for a dark and epic guitar solo
3:15 –
verse 3: guitar (riff 3), ending in orchestral hit
3:40 – 3:55
instrumental chorus melody again for outro
This should be with black metal vocals, if any. Not exactly sure about how many bpm should be and the time gaps, just imagined from my head. It has two slow sections with slow atmospheric solo, some black metalish parts, and an instrumental chorus. (I'd personally like to do music with one doom metal guitar, one echoing lead guitar, and industrial keyboard elements - this is not intended to be 100% Bodom.)
The whole thing includes:
3 guitar riffs
2 solos
1 chorus melody
1 keyboard choir
1 dark electro keyboard section
5 drum patterns
We could share one for each, then glue them together and see what comes out...