You're right, but looking at the download statistics it seems that the majority of users have extras-devel enabled. If I push these betas to extras-devel, several thousand people will install them. I want the more obvious problems to be fixed before doing that.
I guess one of the RCs will go to extras-devel though.

I see your point that this defeats the purpose of extras-devel a bit, but I'd blame it on Nokia for including the (disabled) extras-devel in the default firmware while leaving extras-testing entirely out. IMHO that's where the extras promotion process is broken: For the average user it's easy to use unstable software, but hard to use/test supposedly more stable testing software. This results in a long extras promotion (see extras-testing queue) and too much usage of extras-devel by non-testers.