To piggyback off of the case-insensitivity with queue names ideas: https://uservoice.atlas-sys.com/forums/581665-illiad-ideas/suggestions/42375580-case-insensitivity-for-queue-name-and-custom-field. Another option to avoid having errors if a queue name is typed in a routing rule without proper case sensitivity would be to have a way to select queues such as a drop-down menu when creating custom routing rules.