Is it possible to create 2D style games like the old master of orion games, side scrollers like super mario brothers, or board games? I would imagine that it is possible since its really just a projection - but I’m curious how much support there is for those types of games within the engine itself. Many of the games I’ve seen coming out of Unity are 3D and many of those are FPSes.
Next question, are there any restrictions to use in the things you build with Unity? If I build an application that isn’t specifically a game I’m assuming that its fair game as well, but since I haven’t reviewed the license I just wanted to make sure that the engine could be used for general 3D simulations and the like.
Does the engine provide any support for VR glasses or any other systems for dealing with virtual environments with head tracking or other VR devices?
Is the engine capable of building ‘open environment’ types of games such as flight simulators without suffering the punishing performance penalties of FPS centric engines such as Unreal.
Has anyone every compared Unity to NetImmerse/Gamebryo/or whatever the heck they are call it this month?
Note: I would be great if there was a pre-sales forum so that people in this category could see each others questions.
Yep, here’s an example, and another. Unity is still a 3D engine, though, so there’s no support for things like pixel-perfect arbitrary sprite collisions, though you can duplicate or simulate that functionality using various other techniques.
Nope, do whatever you can imagine! A number of people have been doing various types of simulator-things.
I don’t think there’s anything out-of-the-box for that…other people have looked into that subject more though. Maybe with a plug-in?
Yes. There’s a built-in terrain system that already has LOD functionality, or you can do your own LOD techniques. The built-in culling is view frustum culling, but it’s not hard to implement your own (like portal culling) if your project warrants it.
Most of the time, the answer is just “yes”, so I’m not sure there’s much point. 
Unity rocks.
–Eric
For me, I don’t generally feel that a pre-sales forum is appropriate but it may be something to consider. In the meantime please know that you can always write us at sales@unity3d.com with any pre-sales questions you have.
Thanks Tom, I do appreciate it. To be honest I’ll be getting the Indie version just because I want to play around with the technology. I used to be a professional game developer, but I’m in a different world these days and just want to experiment. For the price of Unity its EASY for me to join the community and play around.
I do appreciate the strong community, but many times us ‘lurkers’ just like to go through a forum and see what’s been ‘asked and answered’. Granted, the community is incredibly fast at answering most questions - but I really didn’t want to pollute other topics with general pre-sales types of questions 
Point taken. So you know, I’ve heard and agree with requests for forum FAQs (one sticky FAQ thread in each forum area), so perhaps that effort could help the lurkers (among others).
Have fun with Unity and keep on posting!