Ex raids levels should be determined by how many people are in the raid room. Also Ex raid passes should be able to be used throughout the entire day of that scheduled Ex Raid. It’s not like Ex gyms get normal T1-T5 the same day all the time,usually it resumes normal raids the following day. No longer would you need to rearange your schedule or even raid with anyone.
Still would be dificult to raid alone, but gives you the option.
This would help out trainers who work or are to busy at the time an Ex Raid is going on.
With the level changing depending on members it will have many different difficulties.
Trainers are almost guaranteed a catch whenever they receive an Ex pass. The only problem is usually actually attending the Ex Raid itself.