I mean it is very discouraging for players put extra efforts in fighting titan, and willing to use special items to fight titans, in order to get high scores. In return, A+ players did not very often get good loot. However, c grade or lower grades players got great 4* items. It makes the top players, and willing to paid for special items players very sad. They will not paid to get more gems and items to kill titans.
I think it is time to change from random loot, to performance based in loot rewards. This can encourage players to fight hard and improve their skills. Not joing a team by sitting there wait for luck.
Willing to paid players also will paid more if they want to have better loot rewards.
I really hope management can read this and resolve this long compliants fromall over the world.