The Energy would be fine if it increased with your level. Say, +5 max Energy per level, or even every other level would be fine. It would be great. You could progress at a faster pace, even with the timers and such. I really think this game is meant to be more social than PL or SL, and maybe an emphasis on PvP, although that could use some improvements, such as ACTUAL PvP and not CTF. I think the Energy and wait times are fine, but they need to increase the Energy somehow.

Also, there's a 24-hour timer on a mission some time after the 9-hour one. Have fun with that. You can also do missions you've already done while you wait for the long timers to finish. Be happy they don't lock you into that timer. They could make it so you can't do any other missions while you're waiting for timer missions to finish.