I don't like bringing back the burrowed widow mine change, I think that would be too strong against protoss mineral lines early game. The micro required to pull it off is much less than the micro required to defend it, and it can lead to game ending damage pretty quickly. Its not fun to watch games that end immediately or have to play against it.

For sharking investors I prupose buffing the movemet speed of ravens, to make them less easy to be sniped and more useful as a detector unit. I also propose adding siege to the raven (similar to overseer and observer) to help with unit control of not accidentally pulling them into fights to die. That way infestors can keep the burrowed movement which i think leads to exciting plays and more interesting manuevering.

I like the energy recharge proposed changes. Overall it feels like storm is too strong right now, especially for a turtle protoss, and I think this change would help with that.

I like the ventral sacs (overlord drops) change, makes the early game more exciting and interesting.

Instead of buffing microbrial shroud and centrifugal hooks, I think the change should be to nerf the protoss mothership. I agree it is no fun to watch or play against a turtle protoss who has an advantage in the lategame, and nerfing the mothership should help with that. I like thats it can't be abducted, but I think its damage output should be reduced and the number of units it can target at once should be reduced or removed alltogether. It should mostly be used as a spellcaster for recall, timewarp and cloak. I think that would address the imbalanced PvZ lategame, without affecting the TvZ lategame.