You shouldn't have mention that trinklet! Because now Blizz will notice it and will probably nerf it soon :(
As a druid even i feel that this is not fair and people already hate us for our fligh tform advantage
Easiest Fix is to just block all movement increases in the maw including mounts, potions, abilities etc. all races and classes all just move at 100% in the Maw. Then have a few special mounts that can be obtained somehow later that allow for mount based travel speeds when used inside the Maw. Similar to the way in which some mounts allowing faster swimming speed have a mount that is flagged as a Maw mount giving it the ability to be used while inside the Maw as well as outside of course.You can have the maw mount also give an account wide achievement that flag the account so that druids can use their precise travel forms in the maw but only once that achievement. This puts a roadblock obviously on druids and prevent racial abilities to increase speed in the Maw and makes it balances for all classes and races. It also allows Blizzard to time gap when they want players to have or use mounts in the Maw as well because they can add the mount via covenant leveling system along with having one or two as drops inside the maw itself but from something that only becomes available around the same time as players could expect to be able to obtain the covenant one as well.This to me makes the most sense and also makes the system balanced so that you don't have druids running around in the maw and plvling their friends etc.