Mmm, I think your other maps aesthetically were a bit better than this one.
I am really pleased that you are remaking this map, as it is one of my favourites from OTA, and I think Spring is definitely lacking some small, tight 3FFA maps (which, in my opinion, make for the best games).
I think in this design, the 'desert feel' has somewhat been lost. The hills appear to me to be a little artificial, and contrast quite heavily with the realistic texture of the flattened areas.
Some of those shots look more like the Road Runner will come hurtling down the road then a bunch of PeeWees.
With regards to the heightmap, I think that you haven't visually explained why there are these strange shapes coming out of the flat solid ground. Geologically, shapes like these form because the soft sand is eroded around these hard, rocky escarpments and mesas. Your hills tend to look less like plateaus rising from the harsh desert sand (which should be a little less flat, I think), and more like green hills that are wearing a desert coat of paint.
Finally, while I have commented on the stark contrast between the hills and the desert floor, I think the way you have merged the two hasn't been very succesful (smudge tool?), so that the two don't really look to be part of the same landscape at all, but one superimposed on the other.
I don't at all mean to sound overly critical. I'm a big fan of your maps thus far, Ice, and I'm glad that of all the mappers, it's you that has picked this one to re-do. I just wanted to share my opinion on one of my favourite maps
In terms of gameplay, it is essential that only the commanders can get up and down the three major mesas. If you are feeling very true to OTA, fleas and thuds could get up there too.
Guardians (or whatever long range cannons a mod has) should be vital, but shouldn't be able to reach one mesa from atop another mesa.
Building on the mesas should be a very tight squeeze, and you definitely shouldn't be able to get much up there. Your mesas look a bit more roomy, but this is a design decision which you'll have to make.