The main criticisms I have of Krav, are, as you said, that it's not taught with defending against trained attackers in mind and despite what they say it is very much power against power and dependent on brute strength. I do think most of their techniques are effective other than the ones supposed to break the grip of a much stronger attacker, but I've yet to see an MA which effectively teaches this. The striking I was taught was very good and MT oriented, the kicks were the best of my previous Karate training.
Old school Ryukyu Kenpo does teach these thing and ASSUMES he is much stronger than you! There are some very good Jujutsu systems, also. The Krav Maga instructors I've seen here in Israel don't really kick that hard (technique) and tend to telegraph everything.