Despite having started with class/level-based systems, I grew to dislike them pretty early on in my gaming life. The idea that it was impossible, for example, for a wizard to learn to move quietly always rubbed me the wrong way. At the other end of the spectrum, I ran a variety of GURPS campaigns for two decades; and while I liked it a lot better, it could sometimes be hard to avoid players stepping on each other's toes or their characters becoming a little too much alike. I see the aptitude system as a nice middle ground between the two, and I personally like it rather a lot.
As to reinforcements... yea, I was a little disappointed. The only one that makes any sense to me to be deployed in such a manner is the Eversor Assassin. Pulling a Canoness away from the entire order under her command just makes no sense to me.
And as a side note, these are the kinds of threads which remind me how truly lucky I am to have the players that I have. I'll have to remember to tell them tomorrow night how much I appreciate them.