I can't see them surviving much longer.
If you have any problems with the nose gear that needs a replacement that's the aircraft scrapped.
It not dangerous per say but you have to be switched on as an instructor and also fly the thing properly. Any pissing about hoofing the rudder pedals while slow and low is a tad silly.
Shame really, as they are an extremely good initial trainer. And in my opinion produce a better pilot than some of the other more benign trainers.