The pool is also for TRC very unstable. Hash values are jumping... And the website itself and the pool is very often unreachable atm. I can accept that there is a problem every few days, but we pay fees can't we expect a little bit stability?
When the network retargets itself to difficulty 3, I expect it's hard for the server to keep up

It would be a start to host the website and the pools on a different server. This aren't huge investments. An advanced solution would be multiple servers, each one per currency. If they (or he?) want to be a general pool, he should have the power to handle the traffic, otherwise it doesn't make any sense and people will switch to another server (if there will be one really working...).