since most people seem to like the team health bars, one thing that would make it more informative (for me) would be to have the number of players currently alive on each team next to them. i see how they could be helpful as-is showing how a full team fight is going, but for me it doesn't give enough detail, as teams can have near-equal overall health while still being in completely different situations. say after a midfight one team is only two up with a med and pocket running away (150+250=400 total health) while the other team is 4 up with two scouts, a soldier and a demo. say everyone on that team is slightly above half health, and you have 70+70+110+100=350. the teams have somewhat equal health, but the fight is over. since frags are so important, showing the current players alive next to the health bars could give you a kind of quick average player health per team, and i think that would be a lot more useful than it is right now. maybe i'm way off base with this since most people seem to like them how they are now.
also sorry for the paragraphs, i seem to really care about my tf2 streams
edit: actually instead of having just a number that shows players alive per team, maybe divide the whole bar up by player. like have a white line that divides the bar when a new players health is being added on, i don't know if this will make sense, don't drink and post kids:
|----------|--|----|
|----|----|-|
this would give a lot more information imo and be less cluttered than adding even more numbers