The Current the gud leaderboard is useless. Right now it measures the choice to bank guild coins and the ability to alt dump coins into the main guild. It does not measure the relative strength within the guilds.
The second problem is there is not enough damage in T7 for people to use up their rosters. T7 also needs to be compleable for not as strong guilds so just making it harder does not work.
Allow multiple laps to be done on the raid. Once you beat the phase 4 Rancor the captain respawns and you fight it again. This continues indefinitely until time runs out. Change time limit to 47hrs to allow for the 1hr of processing. (This has a side affect of eliminating alt dumping)
Each additional phase you complete should be worth 25 pts and each additional phase should expand the 10th place reward down by 5 or 10 slots so if you can beat the entire raid 3 times all people get a minimum of the 10th place reward.
This solves a big problem with both guild hopping, unbalanced rewards and the guild leader board being meaningless.