No, this is the WORST idea ever in the history of mmos. Cross server pvp and cross server raiding and cross server instances absolutely without a doubt destroy the community in mmos. WoW messed up hard with xserver queing, and that was the main reason I quit.
You don't get to know the people on your server and you care less about helping your team because you reputation doesn't suffer as you will most likely never even see any of your teammates again. I know quite a few people who just go into bgs on wow now to afk farm honor and troll their own team because they will never see them again or even if they do its not like it matters because they aren't on their server.
The system in place is fine as it is, if you have a problem in PvP atm you are bad. I get on my level 12 commando and heal my team which usually contributes to a win, EVEN against level 50s. There is no reason why you shouldn't be able to help your team win even against 50's.
What most people here are complaining about is getting steamrolled by a 4man premade, which they will get steamrolled by even if the premade group weren't 50.
Currently the system in place is working as it makes que times not long at all, and gives the lower levels a glimpse of pvp before they level up to 50. Those who want to twink should just get over it or go back to a mmo that allows twinks.(last time I played wow they were doing everything they could to hurt twinking, like removing certain enchants)
TLDR: Stop your qq, get better, level up, or don't pvp. No matter what you do though just know that the system in place is fine.