Hey there ArborlyMink, and everyone who interacted with this thread! Thank you very much for reaching out to us with your suggestion! We really appreciate everyone who makes suggestions, as it gives us a chance to see what you all are thinking, or in this case we get to look back and rethink on a past decision.
When the Revelius Update came out and suggestions were made about the warpkey cooldown, it was decided that the cooldown would not be changing. However, the GD leadership team has since had time to see how the current cooldown of 10 minutes affected gameplay and travel, and how players felt after getting used to it. They re-evaluated their original decision, and I am pleased to say that they have decided to lower the warpkey cooldown to 5 minutes. This change will be complete on the next server restart. Thank you for bringing this up again to us!
EDIT: This cooldown has been changed to 7 minutes, as we have now added a second warp slot and a permanent warp to Hogsworth.