First of all, I kinda miss the simplified controls and slightly faster gameplay from the GBA games; which, I'll admit, has nothing to do with the hack but I felt I had to say it.
First impression after 2 hours? It's alright as far as hacks go, but as I suspected, it's pretty much just a whole bunch of rooms stuck together instead of a well thought out adventure where areas flow naturally from one to another. Of course, in that respect, the original Super Metroid is pretty hard to beat.
Regarding the tricks needed to complete it, turns out the mid air morph is the only technique I had mastered on my own from playing the original game. I actually didn't even remember it until the old reflexes kicked it without even thinking about it.
The Phantoon fight is pretty brutal thanks to the enclosed space, and I just found the Spring Ball after going through a few rooms without it where it would have made things much easier.
In terms of progress, I currently have 4 energy and 1 reserve tanks, 40 missiles, 10 super missiles, 25 power bombs, the grappling hook, the gravity suit and the spring ball.
*EDIT*
Is anyone encountering some isolated instances of corrupted graphics? The first room with green space pirates and those mushrooms has a layer of small black squares in the foreground, and going back to the morph ball room after a while shows a corrupted background.