Change tinker cost to 200 gold?

[EarthR]

tinker should either cost some gold or get its hp reduced so every single lvl 1 ability kills it.
Imo you cant give a tank that costs 0 advantage for 5 min in mid game (till the enemy tanks abilities get lvl 2). the very fact that it costs 0 should indicate that it should die fast. so anyone playing a tank that costs 0 should know that he will instant die from any ability. This is just common logic and something that is fair imo.