I thought it was an interesting concept and a great call-back to the dreams in previous games, but so far the implementation has been.... iffy. Like other players here and elsewhere, on my first run I never saw my dream guy after character creation; I put in all that time and effort and headcanon for nothing. If they're supposed to show up in person later on, that's cool, but characters who don't abuse the tadpole aren't going to have a connection with them. And if they're going to be one of the main villains, having a connection is important (to me, at least - please not another Corypheus!).
Also, so far the game isn't giving us any good reasons to seek out or play along with our stalker. AFAIK you get the same cool powers whether you fight back or not. Why wouldn't you fight back (besides because they're teh sexy)?
