Are you a guild leader? If not, then perhaps question why you’d be promoting the centralized authority and control of a guild master, council, etc.
GDKP is similar to whatever system a raid group uses, such as DKP, EPGP, etc. with one incredibly noteworthy difference: The points you acquire raiding with the team are transferable to any other team.
This gives incredible agency to individuals, without penalizing them for changing raid groups/times. GDKP is a much better system than other systems for player choice, and individual freedom.