as far as i know, not really. if you look at your battery drain charts, the biggest usually is your screen, followed by applications such as games (processor and screen drain), then stuff like media, and most of the time for me, hammering the HSDPA connection streaming for stuff. Wi-fi doesnt use that much for me unlike the old days of the HTC TyTn winmo models. oh GPS is a killer too. so if you have stuff pushing and pulling data every 10mins then with the above....not even another launcher is going to help. Andy OS usually takes only 4-5% of my battery life during the day anyways.
im in the mentality with phones as i am with cars really. ppl say they need more battery to cope with more power requirements of new tech thats on phones. but as with cars: less weight = less power required = less engine size = less weight.
with phones: more efficient components = less power required = smaller batteries needed to do the same thing/or keep the same size battery for even loger life