It has been mentioned many times on forums and by PVP streamers and it’s a great idea.
Solo Queue will have their own ladder, so they aren’t mixed with regular 2v2, 3v3 and Rbg’s.
People will be paired with other people around the same MMR, could be +/- 100.
Give an option to filter what class/spec you want to pair up with, you can also queue with no filter for random and odd compositions of course. This is a must, as you can’t have it be random. You could be unlucky landing with odd composition 5 times in a row while facing a meta composition 5 times in a row.
You can’t get within a game with the same player 2 times in a row, people could abuse this especially at higher ranking, with a lot fewer players, filtering to 1x composition only, and ending up in the same game time after time, due to limited amount of players at that MMR and with that filter.
This is perfect and what rated PVP needs. You have 3x players, which has a regular 3v3 team, they are sitting at 1800 +, climbing for 2100 on their scheduled play days. On the off days, these people can individually climb on Solo Queue and practice without dropping rating on their teammates in the regular 3v3 bracket.
Lot’s of new players, and PVE players won’t even try rated PVP, because they feel the LFG tool is too intimate, while not being so experienced yet. Solo Queue would open up rated PVP for these people.
Some may say that the PVP player base is already too small to incorporate a Solo Queue system besides the regular system, but I’m sure this over time will create a bigger PVP playerbase, as solo queue is easy to get into. Afterwards it will grow onto a lot of new PVP players, which want’s to play with a specific partner or team.