20 or even 30 player realms

I've been hosting a realm for quite some time now and keep having the same issue of players being unable to join for events. For example in meeting, or we even had a Christmas Party one year and many couldn't join. Because of this I think Minecraft should have more options for realms, such as ones for 20 or 30 players, could even go up to 50. Ofcourse the subscriptions would cost more the more players you have. To save space you could even have it so it costs more per player the more players you have. Atleast the community has the option to play larger realms.