I know you are currently hard at work and concentrating on getting the next area(jungle) completed but we i feel need a steady stream of holiday, or during quieter times, seasonal events to keep the interest going, once you have max gear, or close to it, it just becomes a grind for, well, nothing especially with the poor(sorry but it is) arena.
So, i would like to suggest some holiday events i would like to see, and for others to reply with other event ideas, and maybe get a response as to what holiday or other events you are working on or are likely to include.

St patricks day (march 17th)..celebrating the irish
Easter (April 5th)...its easter no explanation needed
St georges day (April 23rd)..celebrating the english
patriots day (may 18th)..celebrating canada
Summer solstice (June 21st in uk)..longest day, nice for a summer event
Independance day(July 4th)...celebrating usa
September Equinox(Sept 23rd)..celestial start of autumn, nice time for autumninal theme event
Halloween(october 31st)....booo, scared you
Remebrance day (November..early) most countries have one around the 1st sunday
Christmas(29th nov onwards) 29th is 1st advent, be nice to have an advent calendar type event


I tried to find something for every month, struggled with august

I'd love a St. Paddy's outfit. :D

And there are so many more countries to celebrate besides the English, oooh all the possible events!