think you should be able to rotate the hotel and maybe have more ground space to build outside pools maybe, and upgrades could be added to resturaunts, staff, internet cafes and so on, but overall very good 4/5
im not sure if it was a glitch but on cave 5 this goblin guy came and killed all my units in 1 abart from the ranged, and it wouldnt die, its very fast and is not as clear as the other goblins its shaded