Just remember to look this from a infantry aspect as well. Infantry are already being squished like bugs by both tanks and planes, now 1hk recons will make a comeback and infantry gameplay will be made even more frustrating. How about making Heavyset give you more equipment points to overcome the "penalty" of the 3EP plates? Time to add ammo pouches as inventory items as well just as med pouches?
There are at least two things those should be implemented before switching Heavyset as a badge:
Scopes must be equalized way or another (finally time for 2.2x scopes for everyone?)
Special classes must be limited.
If these "simple" two things won't be adjusted into game before the armorplate/heavyset update, infantry gameplay will suffer too much during the transition phase (waiting people at reto waking up into issues).
What ever the changes are, please do not be undynamic with the changes. Actually follow through the process and do reasonable adjustments rather sooner than later. People are already sick of waiting Reto to figure out flaws in adjustments and actually giving enough priority to readjust.
The brightside of these adjustments, at least recons would regain some role in the fps game as well. And perhaps armor penetrating bullet's will be given some extra bonus against the plates?