You seem to think that, because Tyrants are on the bottom of the evo list, that they are - or at least should - be the best alien in every category. Because of that you always evolve to Tyrant, and it never crosses your mind that another evo could do the job better.
The "pipes" is a perfect example. An adv goon or even adv mara can destroy the pipe base, but you evolve to Tyrant because it's the "best". Then you conclude that, because the best alien can't beat that base, that the Tyrant is underpowered.
The only thing I'd remotely agree with would be the cred/EP distribution. If you're at max creds/EP, your earnings should then be equally distributed to all your teammates. Of course, it wouldn't show the decimals because it'd suck to have 1.275 EP, but after enough extra kills you'd eventually earn 1 EP for your entire team. And humans would get a slow trickle of creds from anyone with 2k credits. It'd be a simple way of not wasting those points, and wouldn't change the game much.