All you need to simulate wind in CC is a change in gravity, surely?

A scene with wind is here and is done somewhat well. It does not appear to lag too greatly either.

I'll cook up some quick actors and weapons when I get home, if any one wants to make the Lua then that'd be awesome

I don't care if it's Scorch Earth, Pocket Tanks or Worms, we need a roller weapon.

Shook's Hueg Pack o' Mods. Wheel gun and roller mine.

So basically, I'm hearing that everything I want can be done, but finding the time and people to do it is the real kerfluffle, yeah?

Yes, we are essentially saying that everything you want can be done and yes, in all requests like these, regardless of idea quality, a major problem is someone actually taking the time and effort to make your request.
However, you seem to be lucky in that p3lbox has said that he/she'd do some stuff for you, which is considerably more than most people get.

Turn based play can be done by actor control being disabled/locking on controller into controlling an observing invisible actor.
Angle/velocity is pretty easy, just changing a couple of variables with key presses and applying them upon firing.
Money for damage is pretty easily done by checking each other player's health during the turn and adding funds for damage dealt to others during your turn.
Score sheets can just be printed at the top of the screen.
Wind can and has been done.
An arena background could probably use a particle of some kind with HitsMOs and GetsHitByMOs set to zero.
Buy system could just use craft which add direct to a set actor's inventory only at the end of a round.

I could offer recompense in the form of tasty cookies~

Actually you're wrong on almost all of these points, but hey, no biggie.
Turn based play would be accomplished entirely through lua; the player would be locked out of moving their entirely lua controlled tank while the AI fired through lua, and vice versa for the other turn.
Money for damage would probably be a static amount depending on weapon and (maybe) the proximity of the hit.
Score sheets would be much harder to do because we don't have direct text draw access so you could either A: use FrameMan's screentext (not ideal) or B: use a shitload of MOSRs and a text drawing function (also not ideal, though it'd be neat)
Dynamic wind would require lua, not scene gravity (which is read only)
Hugeass backgrounds could be a problem but you could just have each arena be a seperate mission.
Buy system doesn't require anything from standard CC because we're not using actual actors

When... did I say scene gravity was needed?This is a different way of doing things, sure, but could you explain to me the bit about me being wrong?
EDIT: Also, Grif is Eric and Thor is Paul right? I always get you two mixed up...
EDIT 2: Other way round, Grif is Paul, Thor is Eric; really should remember that: not the best people here to antagonise for sure.

Well, I don't know about Grifs entirely lua controlled actors but I made this using ini modding only

that's awesome! exactly what i was looking for. can you make the velocity gauge go from green to yellow to red as it gets longer? you know, as an additional indicator of power.

Nope, you'd need Lua for that

Well if I were to do it in lua it'd be pretty significantly more involved

Here are my current sprites ATM if any one wanna take it up and do it properly (Some real Lua scripting rather than hacky ini modding)