Hello, since some zone mounts are hard-coded in default setting, I'd like to suggest another for a practical reason.
In Mechagon island, players in flying mounts are attacked by specific enemy unit throughput the map.
But Blizzard has two specific mounts that are free from these attacks.

Zone: Mechagon Island (1462)
Mounts: Rustbolt Resistor (168829), Aerial Unit R-21/X (168830)

Probably that's true that normally players don't meddle with rules much. In my case, I use 'default button' quite often when I want to see a working example usually after I fail to customize command lines. Luckily now with new 9.1.2, I finally managed to add a working rule for mechagon myself and very happy about it. Thank you!

I'm going to leave this open for a bit, I think I will try to put it into the defaults once I get this beta testing out of the way.

I have looked at this before, you can see the commentary in #41 (comment)

The main problem is "even if I add this to the default rules everyone with any rules of their own will never see it." Because once you set your own rules the complete set of them is saved, and you don't see the defaults any more.

Maybe I was wrong and it is worth doing anyway. I'm probably overestimating the number of people who have custom rules.

I think this needs the picker and the rules UI to allow up to 3 mounts. Making a group in the defaults is too annoying with AceDB.

Looks like there's a heap of mounts that do this now, such that three wouldn't be enough anyway. Sadly this is a niche case and all of the solutions are probably too much work to get right.

Closing. Oh well.