I've been taking them almost every working day for the last year, having used them a lot for the first few years of build and honestly it's hard to find fault with them at all, they could do with some sockets perhaps being added and Wifi and they've had seat covers and carpets replaced, but apart from that they don't feel much difereent from when they were introduced into service
If they go into storage it will be a travesty because the build quality of both sets of them is outstanding and they feel nowhere near their age and put a lot of newer stock to shame, if you compare them with Bombarider stock produced around the same time or even half their age, the 360s still come out far better.
I've also never had one fail on me or have an AC breakdown, a door out of service or anything like that and I must have noticed up at least 500 trips on them.