Nah, it's not plausible that ALL brigades are expanding to 30. Some? Sure. J-20 and J-16 units would be prime candidates I guess.Is it possible that all Air Brigades are expanding from the standard 24 in three flight groups of 8 organization to 30 in three flight groups of 10? This would track with some attempted estimates about J-20 brigade size over in that plane's thread several months ago, when it was found the known number of brigades does not align with the known production estimates (assuming each brigade has 24 aircraft).
But known Su-35 and Su-30 numbers don't mesh well with that reorganization. J-11B either, unless there have been 260+ of those made. Which there have not been, to my knowledge.
This is absolutely possible. Not just with J-10A training units. It's something I wrote myself in an earlier post here. I wish we had some actual photographic indication of such large training units.It is possible training units with the J-10A are much bigger than a normal combat air brigade. In the 1960s, the average Soviet Fighter Aviation Regiment with MiG-17 had 60 some airframes, but some training formations with the MiG-15 (more or less similar aircraft) had up to 100 airframes. Making a statement that this is the case would be speculation, of course.
Also, if used for training, perhaps some early J-11 and J-10A airframes may be used for the training of maintenance personnel. In this case, perhaps it is possible they would be stored almost exclusively inside hangars and may not be considered as part of a training unit's flight worthy complement (if part of a flying brigade at all).
Possible but I don't think those would amount to a meaningful number of said airframe types.
I think it's much more likely that there simply isn't a neat organization. Rather, some units are larger and others are smaller, depending on the requirements of a geographical command. Sometimes even within units operating the same type of plane.