Not every Player Side Scheme is great.
This one though, if you are playing an X-Men deck in leadership, is pretty good.
2-per player is a pretty low bar for threat; if you are playing solo this is usually going to be a single thwart (for the majority of heroes). It gives everyone at the table a 2-cost ally with a 2/2/2 stat line which is already great. Sure, it doesn't put them into play; but you have that ally for the rest of the game.
And if you are playing an X-Men character, the ally gets a boost which is pretty powerful. The person who put the PSS out has to be playing an X-Men character anyway, so it's only other players who could get the "unboosted" version of the ally. And the boosted ones are really good - 3 attack or 3 thwart, on a 2-cost ally? Or an ally with 2/2/4?
And if you are playing Leadership X-Men, you probably have Uncanny X-Men out - a 1-cost ally with 3/2/3 stats? Yes please!
Unless you are really hurting for card space, this is a great add to any X-Men hero running Leadership.
Note also - with Children of the Atom, X-Force heroes can get in on using this too.