I’m usually happy to get the “make elder specialists” Ambition. By the time such an Ambition shows up, it’s typically taking me a couple years to make an apprentice, and maybe 4 or 5 years to make the elder. Not a big deal at all.
Also, I’ve won all my games with Ambitions. I have yet to win a Score victory. I think Ambitions are more fun. Sure, occasionally an Ambition is difficult or impossible, but usually they’re feasible for me, even on higher difficulties. In the Magnificent game of the week, I had a shot at winning on Ambitions; I completed 6 but was on the verge of #7s and 8 when I lost.
All that said, one truly impossible Ambition would indeed halt progress until my leader kicks the bucket. In such a case, should I consider abdicating?