It's funny you should mention this. I do hests on my main + alts all the time for the roulette (Healer, BRD, DRG, other archer.... recent alt MRD). I rarely see someone take off without the tank as much as I did last night.
I just recently started getting into MRD. I found it a little less bland than GLAD once I got passed my fear o_O; (always felt like Flash = safe, Overpower felt more finnicky, since I'd been tanking glad on my Hyur alt)
Lazily got my Balmung alt nub up to WAR off and on while on staycation and didn't have problems with this happening. Not a single time.
Decided to put that practice to good use last night and just transfer that fun times to my main character on Couerl so I can also be with FC when I play MRD/WAR.
First three hests I go into - DRG and WHM just run in without me like I didn't exist. (I stood there debating on just letting the DRG have it all... But decided not to sink to their level and to at least try to do my job).
NIN runs in and does the same thing.
DRG does it again in third hest.
This was all in a row since I was sorta spamming the hests (as I'd gotten MRD to 17 some other time, ages ago).
I was -highly- unamused.
Only had one hest where someone didn't take off without me or (in the very first hest instance where theres two mobs seperated) run to the complete other mob while I'm pulling a different one. That one time they didn't, I just kind of stood there waiting for them to go into a full flail run the moment the barrier lifts, ready or not.
It was like they all came out in full force last night.
Only had one good experience out of four/five hests and two dungeons since I tried leveling MRD on my main.
Maybe my alt is just more like-able on visual contact. ¬_¬