FYI, there is a new way to go broke in CA. You can now buy up to 12 of each Favor general and then promote the general in question. Always increase in stats. But sometimes increase in abilities as well. First promotion takes 1 extra general; 2nd takes 2, etc. It seems to make more of a difference for your higher leveled generals.
FYI, you cannot always trust the preview that you get on the Generals page. They appear to be tweaking right now.
Perhaps you can offer your experiences here on this matter.