Even if the trailer wasn't impressive (I'm certain all the hype has to do with nostalgia rather than the actual things in the trailer, since it didn't really show anything), I'm still really curious about what BGS will do with F4. It's been a long time since their last game, and since then some competition was added to the open-world RPG arena, so they need to push things forward. I didn't feel they made any serious leaps between F3 and Skyrim, and while I didn't play Oblivion, I understand that it wasn't all that different, either? I hope CDPR and BioWare will make them perform some major improvements and additions this time around.
Please Bethesda, tell me you have good gunplay this time!
Personally i think it would be good if they have taken a sneaky glance at Metro Last Light's gunplay.