While some of the proposed skill upgrade perks seem like decent additions, I think that requiring players to spend the already low amount of skill points that they have on them may be disliked a lot . Trading off perks against other skill investments like masteries and ultimates could feel too limiting or punishing for many players. These perk changes also don't come across as particularly impactful or game-changing - they seem more like incremental stat adjustments and minor tweaks in most cases. To really get the players excited, you may want to consider more transformative or versatile perk options that don't necessitate hard trade-offs against existing skill progression. Bigger skill changes that open up new play styles could go over better than just plus/minus numbers on current skills.

Just my two cents, but hopefully some of this sparks some ideas. Thank you for your consideration.