DnD combat doesn't rely around a rogue sneaking around and stacking 5 barrels of explosives around all enemies. It's a neat trick for sure, but I feel that it's gimmicky and doesn't feel like DnD.
This totally feels like D&D to me. Not in the specifics but players trying really intricate tricks to solve problems is a big part of play. The environmental stuff IMO is there to try and capture some of that tabletop creativity. Certainly could do with some tweaks and changes throughout EA but I am sure that if as a DM I put an explosive barrel in a game the party would start collecting all they could to set up exactly this kind of trick.
