Premades are the single biggest problem in pvp and should be removed. Archievment hunters will abuse this, and strong pairs will have about 90% winrate in casual matches.

Got my wings of fire last mog event. Usually you had one rw match going on and you soon came to know which strong players are playing. At the start of the match you can see which players and premades are on your side, and thus know which are against you. You can then tell which side will dominate or if it's gona be a fair match whit about 80-90% accuracy. So you often know the result of the match at the start, making the match itself completely pointless.

We have the same problem in cc a little allready. Early if there is only one match going and couple strong players, the matches can be predetermined. 2 player premades gona be horrible.

Remember: Strong premades have over 80% winrate. That means other people have under 50% combined(33 fl). Math.