We often find mobs to be a challenge, why not make such maps with some "eye-candy" (with this new graphic features) in the end, example is having a map that has a river but on "roll" by entering it changes (like abyss or sibayad outskrits) to same map but with "less river" enough for PCs to pass into the tunnel that you couldnt before therefore making the feel how maps are "alive", what UD is for sure.
make on such maps skills like, climbing, bluff, preform, to matter.
With all this portals its a bit instanced once you get to higher levels and discover them all, this would offer that element of suprise, maybe wouldnt be used as 99% of other maps, but sure would give more praise to the Arelith as a server that provides depth in this way as well.
And aye, i know priorities and time conzuming be burden over this kind of project that looks like construction of UD tourism sites
for DEVs, so this suggestion is for DEV that got tired of his work , and would like to make this as somethig more to relax its mind but actually make something "sweetly dangerous", map that tells a story on its own. 
