No because none of that is an epic 24 man raid... it's different. The raid would be bigger then some costumes, pets and an area people rarely go too.
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The Ronso are cool and not entirely "talking lions". They're like furry Roegadyns, unlike Red XIII which is literally a talking lion. Or Tiger.. A talking cat, you know what I mean!
(I refuse to call Ronso anything other than Ronso, purely because I hate the word Hrothgar. Sounds dumb.)
It's worth noting that Hrothgar was the name of a king from the story of Beowulf. Not saying you have to like it, just that SE didn't make it up.
I mean, by your logic, once the following expansion lands, nobody will go to FF7's raid. Alliance raids always suffer due to Lab and Syrcus Exist due to item level cheese. How many people now a days still have Ivalice pending because they joined in ShB and likely wait for hrs to see a queue happen? Its a common thing.
If the "extreme" fights will be themed around the weapons of FF7 or maybe something else, that is something that can be an easy experience by comparison of a 24 Man. But hey, the raid will have more costumes, pets and will become an area people rarely go to once its not the "current thing".