Without proper development feedback and testing support things like this will never come off the ground.
Players can whine all they want, in the end its for THEM we're doing this. If people can't appreciate this, then what the hell are we doing here in the first place?
Yes without proper testing no developement. But people in the first place join the server to have fun on a popular server. Newbies because it is always crowded and they expect a gg, regulars cause they know they got a gg.
People that are new to the server do not care if a test is done for a new balancer, they just see by numbers unbalanced teams and leave. Regulars also get annoyed by the unbalanced numbers, but at least some regulars know about the balancer test and might accept it for a longer time then newbies.
The situation atm might lead to a working skill balancer, but people playing on other servers cause they are just pleased with normal balancers and even teamnumbers. If they got annoyed for too long on their "ex" regular server, it will be difficult to get them back.
A high risc for not knowing if a skill based balancer would really be that more good then the "normal" balancers have been utn.