You can have belts and rank slides, they should be issued. Try and play devils advocate, what do we lose if we get rid of PRI subs, Sqn Subs, Tp Subs etc (you can even through mess entertainments in there too)?What money? For belts? The Army provides belts (and rank slides). Certain Officers think that isnt good enough and steal from their soldiers so they can wear what the officer wants them to wear
My Troop had loads of socials, when I was in Germany my Sqn had loads of socials, all without the need to steal from the soldiers.
Ive been over this before with the One Day Pay Scheme, at the time it worked out the the fund paid on average 4 quid per soldier on AT. This justified steal a days wages off the soldiers to fund among other things, the Corps Mag that no one ever reads and some silverware for the Sgt and Officers Corps Mess'es
Paying into something to save up is a throwback of the army going back decades when soldiers didnt get paid much. I always thought it was embarrassing that the Sgt Mess charged a tenner a month for the Balls, instead of 60 quid twice a year like the rest of the society