The main problem with Matchmaking in grand arena, is that there is no incentive to have a large Galactic Power. Players are rewarded with weaker opponents if they have a lower GP. One solution is to give a flat reward based on GP. An example with the current grand arena is to give an extra stun cuff salvage to each participant for every 50 or 100k of Galactic Power they have. In addition there should be bonus rewards tied to the number of defensive squads required(GP Bracket), to compensate players for the extra time required. This extra reward structure should incentivize players, to join Grand arena with their true GP, which will make for more competitive and fair matches.