The key to using glass is ventilation. If done correctly, I think it's actually better than wire mesh if the enclosure is big enough. You need to keep the air moving and exchange the air using fans.
For attaching branches, try closet pole holders
It's don't think it's possible to say how many bugs to feed without context of bug size, especially when using Dubias that range so much in size. It's not so much an issue with Black Soldier Flies.
I think large bushes are better than tree branches, unless it's a small tree. Also, I lot of people don't disinfect branches, including chameleon guru Bill Strand.
It's my first experience with shedding and it's looks like a snowstorm hit my enclosure. I had no idea shedding would happen over such a short period of time. Basically one day!
I'm glad I'm not the only one! I never see mine drink but he's very healthy and has good urate. I sometimes see him slowly stick his tongue to a branch and I spray water on it thinking he's thirsty, but he turns around quickly.
It's my understanding that chameleons get some of their water...
Good timing on this post, I just got my first BSFL shipment today! So far my cham loves them but I didn't expect them to be so small.
According to chameleon academy.com, if they mature into flies, they're harmless https://chameleonacademy.com/black-soldier-fly/