I definitely agree with Thunderclap being a fantastic move. Aside from being able to quickly hop to an ally like BLM, MNK's thunderclap is really good for catching up to allies and also maintaining uptime on bosses , especially with how they sometimes reposition-teleport to the edge or middle of arenas quite frequently as of late.

I recall in P5S the double-dash patterns you could just jump on the boss twice without dropping any GCDs, another example would be those alliance raid bosses that like to triple jump, you can follow each leap quite comfortably. Honourable mention to most knockback mechanics too, you can kinda skip those with a good timed leap to negate the knockback effect which is nice in the occasional cases you get KB'd more than once in 120s.

You can definitely play a MNK like a magic-less BLM with 3x uses of Aetherial Manipulation and slide across the map like crazy. (If you want)