Tropice is my latest map that will cater to one-flag (and one-bomb if I can find the TU version). Attackers spawn at the beach and try to fight their way up to the defender's base. I tried to include some elements of Powerhouse coupled with some of my own ideas.
This looks interesting, though the mergings on the circle platform might be better. The High Ground/Powerhouse mix is very cool, though in my opinion the Powerhouse circle looks a little forced, like you really wanted it to work but that it didn't fit very well. I'll have to play it, but I'm just not sure about the circle.
This map reminds me a little of Assassin's Creed 2 for some reason. Looks like a pretty cool map, even though some of the blocks look a little high and quickly forged, if you know what I mean.