I for one would love a new challenge and the idea of an arena where the prizes are better and the top can fight, even if it would be a weekly event.
To be far though, it would be interesting to do it for all power levels as the top already gets many advantages.
I would also be very happy with a weekly arena shuffle though, just to make it more interesting. But then I think the moving should be reinstated like it used to be; one place at a time so you can actually get to stakes you want.
I would support the idea Villainx has posted. It would also gives lower powered players acces to the top 3 in arena for realm and help them grow more. I would like to be able to have the option to be in one or the other at certain times.
Instead of changing guildwars, I would love to see
Realm wars as an event. This will keep the difference between realms alive and would be interesting as not only power but also strategy and politics could play a factor.
One could make an alliance with a certain realm for instance. I think it is good to keep this seperate from the already existing guildwars, but could also apply to cities (or even countries

).
The prizes could contain objects as gems, heroes, spiritplans dependent on gear already in place - or - buffs such as garanteed succesfull sail (by protection buff once a day), Stamina bonus once a day, double pvp loot gain once a day, double frags once a day.
It could be interesting to change GW, but I think it would be unfair to take away the already existing buffs.
Other feedback:
- Please reconsider the costs of the lvl4 gem removal. I feel it is ridiculous to put that in place, it is way to high.
- Please give the option to search for players by name in rankings
- Please add option to change name of the guild.
- Please add at least ONE new hero.
- Please make more lvl 60 runes (or lvl 80 ones)
- Please consider a way to make carib more accesible for lower powered players or add an extra feature on assistant so one can make 100 if not done banish and sail. This hurts the smaller players most and makes getting a full assistant nearly impossible on the newer servers where one guild rules and others can't grow to generate some real competition due to the banish hours and sail failures. Only addition needed is an extra fight count to make it to 100.
- Please consider resets on saint to be specific, so you don't have to reset all, but can chose to remove 1 saint.
- Please consider adding sidequests to keep the game from being too repetitive and players getting bored and quitting.
EDIT:- Please do something about the fact that stars are taken away when medals fail. Fail percentage is really high and then when stars are taken it is a slap in the face.

, ty for asking feedback!