Several years ago physres-boon was removed from the game. Mostly because it
simply was too good. But in my opinion it also brought a new aspect into the
game, where it made that aspect of tanking eq-dependant, which I think is a
good thing. You couldnt tank with just boons anymore as easily as before and
it made people who had the knowhow and had gone through the trouble of
acquiring a good defset rock more.
Same philosophy, in my mind, applies to the spr-boon, there should be some
things where a player should only rock by investing time and effort and having
a good pair of hands.
And, at any rate, the the boon is totally too much spr at the moment anyway

.