My ideas would be picking up your action skill in item form, more chances to see chubby skag and cameo appearances for the boss…
It only took a week to get mental awareness of the map, I’d like to see 3 possible maps, an addition such as that would not only peeve some people off but in my case - give an incredible total haystack for players to find needles in.
I say/think these ideas while part of me has an inkling GB has something better in store and we did get a functional Arms Race, I count my blessings (raw combat, ability to farm M10 weapons with whites, the player can actually die/royally make error, Sal and Axton, the sic beats before drop in, the new gear… So on and so forth)
I feel some were to quick to judge a mode that seems like initial frame work for some really sic future Races. I feel there was too much face value judgement without players getting in there and seeing how AR can give you both good and bad situations.
When soloing Guardian Takedown with a Moze Deathless Urad 7 there are no bad situations, I have ensured victory.
AR is a gamble, this is new mode and folks accustomed to BL aren’t going to quite “get it” but as for veteran Quake Arena players, this Race is a most welcome addition. Even if GB don’t add anything more 
There’s trials, takedown, side questing, boss farming, Mayhem, challanges and now arms race.
If I may say it like this; once given a new avenue, before wishing it was more or something else - appreciate what was given.
Upon arms race release few appreciated it, on the flip side it gave me a new addiction lol