I saw that your post was getting buried so I'll bump it up and try to answer your questions.
For your orchids in glazed pots: This is just my
on the subject. If some of your orchids are phals that are in clear plastic pots, it is better to take them out of the glazed pots. This is because their roots are capable of photosynthesis, just like the leaves! For other types, I think you can leave it in the glazed pot, providing that the orchid pot is NOT sitting in water. Personally, I never use such pots.
For the humidity, I really can't tell you anything. Do you have a hygrometer? That would give you a pretty clear answer to your question!
If you are in doubt about the condition of the medium and roots, repot! Even if it is in bloom. It is better to repot even if there is no problem, than to wait until it's done blooming and find out the plant has root rot. There are several people on OB who always repot new orchids, even in bloom, even if the medium seems fine. You never know what kind of bad surprises you may find!!
I hope this helps you, and hopefully other members can provide answers to your questions!