Once upon a time I would have scoffed at such an idea and written it off as, "you have a better chance of seeing pigs fly" than seeing such a crossover event in FFXIV. Well, my piggybank just up and leaped off my shelf now and flew out the window since SE negotiated with Sega to run a FFXIV/Phantasy Star Online 2 event in Japan (Odin appears in PSO2 and they're currently working on bringing a PSO2 themed event into FFXIV).

So anything is really possible now I guess (given Monster Hunter's apparent popularity in Japan especially I would not be surprised if SE did something for it eventually.)

But who knows what the future holds.