I probably won't get it.
The FA purging all active buffs looks interesting though. It takes 2 turns, and 3 (Body cannot be changed) equip slots, and will purge all active buffs on the enemy. Completely useless atm, necryptos enemies will destroy you before you manage to purge, and will then re-buff themselves (I assume) and nothing else buffs itself by enough to warrant half your weapons devoted to getting rid of those buffs.
Might prove useful in the future though. Hypothetically, if there was an enemy who buffed itself by a lot across several stats, but would not re-buff itself, and would buff itself by quite a bit, preferably if it buffed itself later in the battle, the mechatron would be useful.
For example, an enemy who would, at a specified turn in the battle, give itself giant buffs, and get much harder, and who would not rebuff itself, would be easy with the mechatron. Shift at a turn prior to the specified turn, when it buffs, purge. However, no such enemy exists, and it is unlikely that any enemy ever would, most enemies of that sort will re-buff themselves, or redo whatever it does.