Looking awesome! - I reckon most people would like to make a game like that, you've done well to get it looking so cool - well done.
There is a sorta secret command that might shock you with it's coolness, you should try it out and see what it does : On all your transparent textured objects, instead of using SET OBJECT TRANSPARENCY Obj,1 - try using SET OBJECT TRANSPARENCY Obj,2. It blends the textures into the world, and also lets you keep filtering on without having to worry about ugly lines around the textures.
Van-B

I laugh in the face of fate!