With the APC respawn being a research now, we should return the APC's HP to it's normal level. The only reason why it's so abnormally low is because Krenzo wanted to counter APC rushing. Right now, making 2 jeeps are cheaper and more effective than making 1 APC.
I was considering this awhile back, but due to the amount of work it takes to balance the weaponry apc's can carry, it's better to stay as it is for 2.2. APCs are not supposed to be better than light tanks in combat, and the low health is the main contributor to this balance, so changing it without other changes is out of the question and theres simply no time for a change like this right now.