Power armor (Fallout 4)

Let's discuss the power armor in Fallout 4.

First, the good news - now it's not a useless piece of scrap metal in the inventory, and real combat exoskeleton, which can, for example, to jump off the roof is not very high at home without getting damage.
But there are limitations. Looks like armor will have its own power source (see screenshot). And called into question the availability of the PIP-boy in fallout, and constant wearing.
Power supply

Second, armor has different resists to physical damage and damage from energaire that quite a bit, but closer to the first parts.

Third, the power armor can be craft and modify. Starting with painting some of its elements to their replacement counterparts from other types of armor, or installing džetpaka.
Speaking of modifications, the trailer was shown 4 models of armor:
T-45d is the simplest model, used by the Brotherhood of Steel and Outcasts,
T-51b is the last pre-war model adopted by the U.S. army just before a nuclear war
X-01 Mk. II - post-war development of the enclave,
T-60b - not-seen modification, which are not yet known, presumably the pre-war prototype developed at MIT.
Jetpack