@Ouro, it’s a pain to respond to video. Even if it’s 2 minutes long, I am spending time scrubbing back and forth when trying to reply to specific points. Please use text.
Left click select as default is not going to change. You might disagree, but the people that made the decision were well aware of the points you made and decided the trade-offs were worth it. Even if many use right click select themselves. The reasons for it have been explained here. Discussion regarding that choice goes here.
Release Confirms is already on by default, and the left click select keymap has W key as a kind of drop tool feature.
Tools often have their own gizmos (and more will come), and these are often in the same place the transform gizmo would be. This conflict is the same for left or right click select. Further, we may support things like extrude immediately from the face under the mouse cursor without selecting it.
We could consider showing transform gizmos when there is no conflict, but there may also be more useful gizmos to show to tweak the transform in a way that is e.g. aligned with the extrude direction, or e.g. a way to tweak the bevel profile. So by having an always-on transform gizmo it restricts how powerful you can make tools to some extent.
Having a way to have it always available when dropping a tool is probably a good idea though. In general the relation of the selection / transform tools might be revised.