I think the idea that Emerald is unstable stems from the fact that people are told that it's unstable in tutorials for Fire Red or Ruby. I'll admit I was once part of that ignorance that it was unstable. I guess people think it's unstable because of when they try to use a program with it, the program uses different pointers for different versions and therefore messes up the ROM.
I didn't realize there was so much space on Emerald. How much larger are the secondary tilesets? And I was also unaware of all the music choices. I'll have to experiment with Emerald. ^_^
As much as I hate to go off-topic, why are lengthy reviews that don't have number ratings in them being deleted in the Map Rating thread? Those lengthy reviews are more constructive, a lot more well though out than posts that say things such as, "THIS MAP IS AMAZING 10/10!". Yet those posts are not deleted while good constructive posts are. I fail to see the logic and reasoning behind this.