I stand by my glowing review just a post away: yes, arena was a good idea and a clever use of the small resources the team has. Granted 1v1 on a flat arena ends up exactly how I predicted (everyone just blows all cool downs and hope for the best) but that was always the bane of duels and at very least people are doing more pvp which is always good. The only thing that I wasn't able to test on TL were queue and spectating and both of those things turned out to be horrible.
Let's start with spectating in general: you can't select the fighters in the arena so you can't see their HP bars, names, spells being casted and even some of the particles.
When spectating duels you are just looking at two characters duking it out with a very vague idea who is winning and who is using what. You might not even be aware who is fighting because you can't see the names. Correct me if I am wrong but huge part of watching the duels is paying attention to HP bars since there is nothing more exciting than seeing the fight ending up with someone under 10% of HP. You can forget about that with arena.
When it comes to PVE it's even worst: all you see is a player face tanking some nameless pet. You can't see the particles on the floor that pet is casting, you can't see HP bars. Basically is as boring as watching the paint dry.
Here is my main grudge: since the arena is shared between PVPers and PVEers (can't imagine why) when I come in for some duels I have to endure (aka spectate) 3-4 fights of people face tanking their pet cat or whatever. Then I have my duel and then we are back to cat fights. At this point I am like fuck it and doing mini or logging off. So I am estimating I will be rank 4 with Gladiators factions in 2020. So if you are wondering: is arena content the lord and savior of Hyboria? Nope.