This would be a great feature especially for big guilds with many sister guilds.
The Guild owner would only be able to use this feature in the Manage Guild section.
They could select the members that they would like to Auto Rank... so that if they left to go to a sister guild and then came back, the system would automatically place them to the Rank that they have been assigned to Auto Rank to.
If the player was kicked out the guild and they had an Auto Rank this system would automatically take them off Auto.
This would mean no more waiting until the guild owner was online to get the rank they had
Lords Mobile Guild: LIR - Loyalty is Royalty