Dont throw fireballs at me for this..but I really wouldn't mind too much if BG3 used the engine they use in UT2004, or the one they are gonna use for Halo 2. Atleast for what it looks like and how it actually looks natural when you see someone shooting something out of the sky..rather than have someone shooting at ground level and the arrow or whatever flying upwards like has been done in some games.
And if you truly think about it..an UT2004 online map by the name of "Torlan" is relatively the same size as a map screen in the BG/IWD/NWN games..so possibly have make a few maps that are this size like in BG/IWD/NWN that look as good as UT2004/Halo2 and you would be set!
Yet you would be able to rotate the camera, go 3rd person, control a group, show every new piece of equipment you wear on you..and all that stuff would be awesome in a Baldur's Gate game. As long as there is a good story though..because if it was just Unreal: Baldur's Gate..then it wouldn't be right
I know you would probably need the highest top of the line computer to play something like that, but I don't care..I will go and get a job to be able to afford the computer then get the dang game.
*Editted*
Oh yeah, and if it is 3D like I said..you can use the skills CLIMB/JUMP/SWIM, and you can use WINGS and not just hover over the ground well within the distance of a halfling with a dagger, and you could make use of the FLY spell..just don't go the route of Morrowind with that..because it just makes you run in the air, and really horribly looking I might add.
Actually..now that I think of it..the fly spell could look almost like using a jetpack in Giants: Citizen Kabuto..meaning when you fly foward, you lean foward to some degree based on how fast you go, and when you are going backwards or to the sides, you lean those ways based on how fast you move as well.
Just saying that it is DEFINATELY possible to show these things really well in a game, it just hasn't exactly been done to the extent yet.