ORIGINAL: witpqs
As a generalization about Betas, of course. But in this specific case that is quite mistaken. The Betas are actually more stable and have many fewer errors than the latest official release. Some players have opted to play the Betas but refrain from upgrading to 'the latest' Beta until a couple of weeks after a new one is released (to allow time for other players to identify any major new bugs).
By not trying the Betas you are giving up a lot. If you do try them you are risking very little. Your choice, of course.
Well, while the BETAs are perhaps stable and have a lot of neat fixes there has been some significant changes done to the air war. It will be a long time before we know what implication those changes has. So I think in fact you could be risking quite a lot by upgrading to the BETA. I would love to use it for the reasons you stated but I don´t like the idea of such a big chance implemented on the fly completely untested.
Perhaps I´m just too cautious!