Well for one thing a much larger variation in food has become easy to find since the 90's. I think a varied diet plays a large roll in keeping chams happy, they seem to enjoy certain food items at certain times of the year. This may not be true for everyone but it is for most of my chams.
Your O's are giving you trouble? Mine practically chase me down for food lol. I'm pretty sure one of my Brevs is a Crypticum as well, without a Brev to match it with they can be tough to tell apart. I suspect we will see more com in as Brevs, so males should be around at some point. Pure...
I'll have to dig out my old Vivariums and what CIN articles I still have around and give them another read. Right now they all eat discoids, some more than others and I may break down and do some mantis just to mix it up for them.