I was doing it. You have not left me even 1 minute between when I have reacted and to respond :)
My bad, suppose I got too eager. :p
I disagree at the same map changing depending on the kit you are playing on.
I suppose I indeed misunderstood that, although no one actually suggested this. What was sugested by Conea, and what I'd personally rather see are new uneven maps being added, and the current flat maps being completely unplayable with crystal pvp kits. If I remember correctly with the old custom kits you used to be able to toggle what maps you'd play in, so this should be possible to arrange.
You can't say that I have no idea how pvp crystal works for saying that it's playable on flat terrain.
I'd argue that depends on your definition of "playable". It's possible yes, however as I pointed out before, height difference is at the very core of the style. Playing Crystal pvp without height difference is like fishing without a fishing rod. Even if you have the bait you're missing an essential part of the experience.
Now obviously it's technically possible to create height differences yourself, however as Conea said that tends to lead to both players mining down endlessly and ending up fight with swords in the end. It's also important to mention what Conea also said about some (most) maps being very inconsistent in the floor block - throwing in wood, dirt, sand. glass, and stone, which makes it even harder to do.
Conclusion: is it playable? Well, yes. Is it enjoyable? Maybe, to some people. Does it provide people with the very best experience they could have of Crystal pvp? Absolutely not. And seeing as the best experience is what we (hopefully) strive for, I see no reason not to add additional uneven maps, and disable flat ones for Crystal pvp.