then all my other jobs feel shitty and pointless to play.
list all the jobs where not having the merit WS would make that job "shitty" and "pointless to play." I can't really think of many.

So I'd have to demerit something or avoid the class altogether.
Neither? You act as if this WS like triples your total damage output over time or something. as per above, few if any of these WS are so vital to a job that they're "unplayable" without it.

Don't get me wrong, because I've already backed the increase from 15 to 25 points- but you are exaggerating big time here.