Everything has been upgraded over the years except the heel loop and forward lean adjuster (which don't need to be).
Redesigned the ankle strap adjustment mechanism
Redesigned the ankle and toe ratchets
Redesigned the ankle strap (softer and lower profile)
Added multiple toe strap positions to the baseplate
They increased the size of the foam dampening pads
Added a padded footbed
Added a padded highback
They've pretty much addressed each of the gripes people have had over the years, including the toe strap. Outside of Flux's FTM cap (which I don't think they use anymore), Union's split strap is as good as any other that I've ridden.
Ratchets and straps from my 2006 P1's are better then 2013 forces. Toe strap is designed in a weird shape, more boxy boot shapes don't fit that good. ratchets don't release until you kung fu whack them. And the P1's have airbags, better pressure distribution on the ankle strap and are 6 years older. Goes to show.... I have my friends forces right here, as well as the P1's. Forces just don't feel good at all.