That’s great to hear. Are the dd positions gated behind REM weapons, or is it viable to participate with semi-decent gear?
It depend on jobs. Certain jobs dont need Rema to compete.
Now that dyna D weapons are out, just grab these from AH, augment it and it should be competitive enough.
The "challenging" corners (Dynamis Wave3, Reisenjima-Helms, Omen Bosses) are mainly DD burn or Summoner-Burn. Magic-Burst Setups are used very rarely nowadays. You see them in Dynamis shouts here and there but the Leaden Salute COR or even GEOs and RDMs with a proper magic setup can take over the nuke part in Dynamis.
MB setup is just as effective as melee setup for dyna D imo. But it's rarely used by NA because there are wayyy more passionate melee players than passionate blm players in NA community.