[=Errvald;198110]
Last time I checked none of the major Game Engines had incorporated their own ‘3ds max’ in their editor.
BSPs are enough for placeholders, I have the feeling you guys are confusing game engines with game mods…
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You should check out the Source Engine 2 new hammer editor 
- I’ve been spoil by how it is. I don’t think it uses a traditional BSP/CSG anymore? It’s a full blown modeler ala Modo. Epic Games should look into doing the same thing for their Geometry 2.0 stuff.
http://community.thefoundry.co.uk/discussion/topic.aspx?f=83&t=91506
It’s a alpha release and still needs more modeling tools for architectural stuff, but the workflow is fast.
edit: The new source 2 hammer can do everything the old hammer does but more and faster @, great video I’m 100% with you on !