You seem like a nice fellow, but have you also followed the forum for the past two years? Many of these enhancements are already in Werivar to the point where someone trying to do what you've suggested here might as well work off of that. The only suggestions I see a need to work on are 1 and 6. Suggestion 6 could be really easily done, actually. Unless you completely change everything on the other planets, however, it would only serve to make the game longer. That's where suggestion 1 comes in. We have enough graphically adept people on this forum to at least make some variations of the existing textures, and possibly make a few new ones.
... Alas, we've tried collaborations before, and we even had a coalition back in the day, but I don't think this is nearly as attainable as it used to be anymore, especially considering that we didn't actually do anything back when it was. If you show us an alpha release with placeholders for the new graphics, we'll gladly help, but we honestly don't know you well enough to assume you'll keep to your word and see this through. There's another similarly ambitious mod here where the author disappeared for months and just popped in recently to say "Hi, I've been working on this but it's still not ready". (No, not you, ZeX. That other one. You actually left us a real, working mod before you left! Hats off to you, good sir.)
However, even after having written this depressing post, if you can put in the first few stages of work, you can expect me to do at least a few of your graphics.