A) Outside of SMN (who excels at all 3 extremes because of the mechanics) you are better than any ranged DPS on Titan Extreme. Farm that. I flat out don't join Titan Ex groups in PF where there's 1 or more BLM. They need to work much harder than literally every other DPS class to still have the worst DPS on that fight.
B) If you can dodge Wicked Wheel make your own Garuda Extreme parties. Yeah nobody wants melee for Garuda because 75%+ of melee cannot dodge the mechanic that makes nobody want to bring melee. If you can by all means make your own PTs, because again your single target DPS during the burn phases (plumes) and if you become known as a reliable melee for these fights people will join/invite you (trust me you stand out).