Tank is my main too but I never found it 'annoying' to wait as a DPS. Do you just stand there in limsa 20 mins while waiting? O.o

I'm lvl-ing my BLM, I put sound on max (speakers), put myself in queu and then start to clean up or start on making dinner, etc. I don't really have to make dinner myself since I eat at work but you catch my drill.

Yesterday I did lvl, trial, 50-60, alliance raid and ... main scenario (this was actually a missclick as I wanted to select alliance raid ...).
I was lvl-ing my Magikarp on pokemon yellow on my DS while waiting. It's also a good thing to do while you wait between cutscenes in main scenario.

Just do other things. I sometimes also play on my Switch, or review whatever I studied that day (I study every day after work).

I don't see it as a disadvantage, Yes you have instant queu on tank job but then the stuff I do in between queus on my DPS job I then do when I finish all que's as tank. Time spent do to everything is the same whatever I play DPS or tank.

You're crazy if you just stand there doing nothing ...