shihonage
DEVELOPER
no, they aren't. some stuff dependent on grid layout might(!) be harder to manage properly (like cover system?) but hexes have equally simple math behind them.Hexes are harder to code
Character movement is the easiest part to handle. Everything on the map is dependent on grid layout. A single-cell object should take a "hex" now instead of a square, and it should have 6 neighbors.
I suspect the hex system was working good enough for show, but the scenery wasn't perfectly aligned with the grid, so they dumped it in favor of something simple that doesn't require extra tweaking time.