Here my feedback for the Mech mastery.
Its prob one of the easiest mastery to unlock to current times, is it a bad thing? no.
I think that the mech mastery needs more parts and mostly (more creative parts) because the current ones are very basic in each one usage and with in shake up to mostly 3 playstyles ''Bralwer, ranged.'' and its kind of make the mastery lose a bit of what in my opinion made it unique.
and lastly, i think that the complains about mech being ''too strong'' comes mostly from people who don't know how easy it his to combo mech, and all you rlly need is spacing.
in the end, its a good mastery, would have been more appreciated if it has more building variety (more cores, head parts, legs, and some new arms.)
Examples: corrosive arms, press the ability button to release in a cascade in front of you in a 5 meter range acid that deals decent damage and reduces defense for like 10 seconds.
Claw legs: allows the uses to walk on all walls, getting damaged make lose the grip, possible nerfs to movement speed, unless actively attached to a wall, in that case its normal movement speed.
Rocket cabin: if the mech dies, the cabin transform into a missiles that gets lanched and move similarly to pirate cannon shoot, when lading, kills the mech user and deals explosion similar to nuke.