I have played Queen's Gambit and most players my level choose Accepted and then try to hold onto their pawn. After I play 3. e3, while the light-square bishop has c4 has an obvious target, I have difficulty knowing what to do with my dark-squared bishop which is now blocked in.
1. d4 d5 2. c4 dxc4 3. e3
Does it go to the center of the pawn structure at d2? I've followed several of the lines through and it's not clear to me if the bishop really belongs on the queenside after a and b pawns are pushed, or eventually the e pawn is pushed on the kingside and the bishop is freed.
If instead 3. e4 is played, which strikes in the center immediately, no such issue with the bishop arises.