I have a couple of other ideas for options concerning health display that ought to be simple:
1. Always show absolute numbers for your health and mana bars rather than only showing on mouseover
2. Always show the mini health bars above demigods' heads rather than only showing on mouseover
Another idea would be to have another HUD item (similar to the one that displays citadel health in Conquest) that shows the health for all demigods. It could be really exploited by sniper Regs, though, so maybe just have it show your allies' health. I understand that something like this would be harder to impliment, but its just a suggestion.