Excellent in every regard. Minor hangups include:

Not realizing own health pool (put healer health near teammates or cooldowns to limit excess eye movement, or have taking damage make screen red)

Make it so movement wont accidentally trigger a kick start (or make it clearer youve started kicking)

Flavor comments could be more descriptive (make weak heroes text shaky or somethin)

Make heal hearts larger and more obvious (a ping on spawning in, larger icon, put it in tutorial)

But the rest is good:

The healer movements is just slow enough to justify teleport, good job

Is perfectly frustrating, great mood

The feeling of saving an idiot is extremely unsatisfying in the intended fashion, i love to hate it

Thank you, your game is now art ok bye