Just a few quick ideas as we get closer to full launch for the game.
Get rid of Power and the insanely slow recharge time for it; replace with 'Flags' - Flags can be used to Claim areas, but instead of having a bar that ranges from 0%-100% and costs 50% to Claim, make each player have a max of 5 (maybe 3?) flags, and a used flag regenerates in your inventory every 30 minutes. Currently the Power regeneration rate is like 5%/5 mins, which means waiting almost an hour to capture another territory - I feel that this is just too slow for most players who will be walking about playing this game, especially in emptier areas. Wouldn't be a stretch to use the flag concept for raiding as well, but I have a feeling raiding will change immensely already when the inceptors integrate into the game
The next idea is a Proximity bonus for your captured areas. If an area your team captured shares a side or corner with another territory under your team's control, both get 5 point capacity bonus to how much Coin/Energy they can hold, meaning if you hade a fully captured 3x3 area, the center would now hold 80 (40 initially, + [5x8] ), which I feel makes sense, given that it's now in the heart of your captured territory. I feel this would encourage faction members to build and defend together, instead of wherever they can cap a territory
Just some thoughts, they can be tweaked in any way they need to of course, I'm sure I'm overlooking something