The solution to everything is to get rid of expertise.
This. Let PvP and PvE reward the same gear, and make gear mostly irrelevant for PvP.
And the OP has a valid point. I just completed a new alt to 50, did nothing but PvP for the last several levels. I ended up with 3500 ranked and 2500 regular comms, enough to buy relics, implants, and ear. The rest of my gear ended up recruit, and it sucks horribly compared to optimized EWH. Right now, I only complete my daily on that toon, because it isn't fun to be completely uncompetitive, and it isn't fair to the people that I end up queued with. I spend more time on my EWH/WH sage acquiring comms and gear for my alt.
The people responding with "it took me months to acquire WH gear that you can now get in a week" are not getting it. Your last few PvP matches at 49 are competitive and fun. Your first few PvP matches at 50 are awful, and this should be addressed, because it represents a huge disincentive to keep playing.