I have a suggestion. Make the requirement a reasonable number over 1000. The problem is that you typically cannot lose points while under 1000 rating, making it possible to grind/farm up to 1000 without really playing. You will often run into queue dodgers or 3 man 5s teams who will give you the win for free, or there are enough bads under 1000 that it is pretty much guaranteed.

Be that as it may, I don't think it should be an ultra-exclusive forum for 2k or even 1800+. There is a great deal of information to be exchanged between arena players who are serious, but I don't feel that 1000 represents any commitment to pvp whatsoever.