Balancing a game to cater to a large number of people is really hard to do. I wanted to make a suggestion on what I think would help Maelstrom Arena cater to the majority of players and make the most people happy.
Pre patch I was unable to beat the arena (Normal mode) on my V16 Nightblade (V14 gear) or my V12 Sorc (decent V12 gear). After the fix to damage mitigation, I beat it using a V16 Template Sorc and a Templar, haven't tried Nightblade yet, plan to do that this weekend.
I have not been able to beat the first boss on Veteran with V16 Nightblade (pre patch) or V16 Sorc (post patch). I don't consider myself to be a top notch player, but based on the comments and the very few people who are on the leaderboards, it seems the Vet mode is overly hard.
Here's what I think could make the arena more accessible to the majority of players but still be challenging to the best players.
Since I don't have access to my real characters it's hard to tell if Normal mode is good as it is, or if it was only completable because I had access to the best V16 gear. This should either stay the same or be made slightly easier.
Veteran mode, should be about 30-50% between what Normal and vet are now. With another mode, "Hard Mode" at the level Vet is now. Two sets of leaderboards, one for vet and one for Hard. Hard could be activated at the start similar to how Trials have a hard mode by activating some object/button/lever/etc.
This would allow more average players the ability to beat veteran and get decent gear. This would also allow the best players the really hard challenge they would enjoy, and show off on the leaderboards.
The thing I like most about ESO is being able to play with my wife. It would also be great if there was a dual mode where you could play with one other person through vet or hard, with it's own set of leaderboards. Personally I don't care about leaderboards, it would just be nice to be able to track your own score and see if you can do better.
I think these would cater to the largest number of players and give something to them all.
While I'm on the topic of the arena, one problem I've been having is if you die during a round and re-spawn you don't have enough time to switch out any skills to try something different. It would be nice if after re-spawning if you had to move to a circle in the arena to start. This would give you a chance to try a different strategy if something wasn't working.
Just my thoughts on how to make the arena more fun for everyone.