Actually it is better to have the evo wilds over 4 more fetch lands and it doesnt slow you down at all. the majority of the time i will go turn 1 evo into
island or
mountain then turn 2 tap bounce for a post then replay the
island and tap bounce again so you dont get slowed down at all. also if you hit a situation where u dont have a basic and need to play a post you can evo to a basic and then tap a post for mana then bounce the basic. with the fetch land you are froced to choose from 2 basics and take a life doing so which in this deck life matters vs beat down and using
dismember. I can understand what your saying its better in theory but in practice it is extreamly better to run evos. Im not running 4 evos and 2 terras because on the 1/100 chance that i need a untapped land that turn but that doesnt come up to often so having those and 4 simians makes 1/10 of the deck generate a mana when it wants to.