Cool! Thanks for sharing! At the moment I use two shortcuts to achieve a similar result, but I always wear the ring so no equip/dequip: instead I have a button to summon and select the mount, then use the mount shortcut to mount it. I have different shortcuts to summon my drifter and my rivnak, and a common mount shortcut for both. Works best if you want to RP the summoning before actually mounting, which is why I find this preferable.
Here is my Rivnak summon shortcut which, if used twice, will first summon the mount and then select it; /target doesn't work the first time, as you said a pause command would be nice (Blueshana is the name of my mount, substitute the name of your own mount instead; I do that to create a second shortcut for my drifter):
/pet summon Blueshana
/target Blueshana
Here is my (dis)mount shortcut, which doubles as unmount if already mounted (note that if you have targeted something other than your mount, you will need to use it twice to dismount: the first time will clear your current target, allowing the second to dismount):
/mount
/target clear
I will check combining these with equip/dequip the ring, and report on results.
