TV3D. Sorry blitzmax/b3d never impressed me as much as tv3d did via 3d. It's windows only, but honestly is there even 10% of a market in mac/linux compared to windows for 3d? It is also so unbelievably easy to work with, and it'll work on any language you prefer. You can also use it for free until you distribute it commercially for a craptastic 150$.
I suggest it because you have a team together and in my experience with tv3d you can get shit out world editors in a couple weeks by yourself. The community also provides many many tools and mods for generating grass, trees, particles, etc.
Alas unlike b3d, TV3D is still updated frequently and the people in their forums are usually as generous as here.
http://truevision3d.com
Edit:
By the way you can also use tv3d on blitzmax. I think some guy made a wrapper for it, but for an extra charge. Personally I would go with whatever other language you are comfortable with (c++,c#,vb6,delphi,etc) if you go with tv3d.
Good luck. Hope you find what you're looking for.
I suggest it because you have a team together and in my experience with tv3d you can get shit out world editors in a couple weeks by yourself. The community also provides many many tools and mods for generating grass, trees, particles, etc.
Alas unlike b3d, TV3D is still updated frequently and the people in their forums are usually as generous as here.
http://truevision3d.com
Edit:
By the way you can also use tv3d on blitzmax. I think some guy made a wrapper for it, but for an extra charge. Personally I would go with whatever other language you are comfortable with (c++,c#,vb6,delphi,etc) if you go with tv3d.
Good luck. Hope you find what you're looking for.