I hope it isn't chaired by a FJ GD/P - they're often the worst offenders when it comes to correct RT procs, in my experience! The same people who moaned about the brief period when we briefly went back to QNH at military aerodromes.
"After landing traffic, line up and wait" is entirely reasonable and safe. And your GD/P needs to be told "Yes you WILL have to accept being told to wait!". Again, this shows poor understanding of the needs of others. The aircraft on final who hears "After landing traffic, line up and wait" being passed to a military aircraft approaching the holding position at least knows that the mil. aircraft won't try to take-off without a further ATC clearance.
You need a ME QFI with experience of both civil and military aerodromes worldwide to chair such a group. Preferably one who has some FJ experience.