Problem is it may seem like a simple ask, but what you are asking for is likely a complete redesign of a core system in the game. Which would very likely lead to HUGE bugs and potentially topple the Jenga style code. That is why they choose to modify individual powers. if you want more Speed you are very much going to have to pick a different travel, use some enhancement slots, find some set bonus', choose a different alpha, or use some enchantment table buffs. And it will likely be that way for a long long long time.