Moonlapse, I would guess that the whole window thing is just for the looks. Plus, a room will look much bigger just because of that wall of glass for you to peer outside through. I don't really think it would affect the sound too much, but then again, I'm no acoustic engineer but at the old studio I worked at we had an entire wall of glass between the tracking and control rooms and I never noticed anything wierd (sonically) about it. Also, the overhead mics, I'm almost 100% certain the engineer set that mic way up there like that on that side because instead of mic'ing things seperately, he used one mic per pair (or something to that effect) and one cymbal is louder than the other, so to compensate you raise the mic and move it closer to the quieter cymbal to try and balance out the levels. It's an old school trick I learned back in the day of recording our band's in the garage and only having 4 mics for the drums, heh. I'm sure it's widely used though, it's a common sense type of thing.
There is wayyyy too much verb on everything that has it. The kick is not tight at all, the snare is too far away in the perspective, the toms are way off...I mean, this all adds up to a typical every day amateur mix. This being your first time messing with drums, it's completely normal and understandable. No worries man, seriously. You can only get better from here on. Everything that the others suggested is right, you need to really get in there and try a ton of everything. Compression, eq'ing, band compression, gating, bla bla. I mean, seriously, even if you think something won't sound right....try it anyway. You seriously never know when something may or may not work, and, sometimes wierd things happen and what you thought would never work, just did. Also, you need to learn now that no two drumsets will ever sound alike. So, no matter what you learn from this project, you can only apply so much to the next one. Once you get so many mixes under your belt, you'll start hearing things in certain instruments and know right off the bat just where the general area is that you need/want to change. But that comes after tons of messing around and just experience in general.
Seriously, take any reverb off of the drums. Just do it for now, you can always put it back later. Try to get the drums to sound like you want eq wise before any effects are ever put on. Reverb should be the last thing you add to anything. Once the drums are sounding killer, then it's time to add that little icing on the cake.
~006