I think you need to look at the bigger picture here.
Your guild is obviously in a state of flux, with a potentially misleading total GP of just above 100m because - at the moment - you only have around 13 members. And it may well be the case that most / all of your current guild membership are experienced players who have played RotE many times before, but that’s not the case for pretty much every other guild with your GP.
Asking the devs to change the entry requirements to enable a tiny handful of players who find themselves in an undersized guild to play RotE would have a massive undesirable side effect of allowing hundreds of guilds to play that game mode who are nowhere near ready to do so.
And before you come back with “other guilds don’t have to do RotE, they can pick Hoth or Geo like before”, remember that players in those guilds won’t know any better and may sign themselves up, unknowingly, to a deeply unsatisfactory experience which puts retaining those players at risk.
Surely, in this instance, the needs of the many outweigh the needs of the few?