Okay, back on-topic, how bout we get humans an upgrade that regenerates hp, that allows them to auto-heal something like 2 hp/s similar to how an alien heals? [heals slower if the reactor is down, and when the user is not carrying a battery pack, and if both situations happen, then it becomes divided by 4 (stacks)]
When buying this, it throws away the medkit and buys it back when the upgrade is sold...
Then maybe something like a solar backpack [kinda stupid, but its an idea i came up wit a few years back] that detects its surroundings for radiation, in this case it detects the map's lighting and lighting caused by particles/muzzle flares...
What it does when it receives this, it tries to fill up a bar created by the HUD similar to the one used for pouncing etc. and when that fills up, it gives the weapon another clip. If the weapon does not have clips like the lasgun or lcannon, it will just directly feed energy into it.