Well, thought, I could share some of my MorphOS experiences here aswell :-)
Note - I don't have newest version, in fact, my version isn't much newer than that public ancient 0.4...
And of course, I'm running that on my A1200 (for now)
But for hardware, as I was expecting, most "standard" hardware seems to work okay, like X-Surf Ethernet card, CD-drive etc. but bit of surprise, my Squirrel seems to work great aswell (I considered it always a bit "hacky" but don't need better one for just scanner...)
A2232 didn't work, but I don't use it that much anyway...
Oh, Midi playback thru Midi interface plugged into serial port works aswell...
And for software...
If it's "system friendly" it should work, so most likely any WHDload installed ECS game will refuse to work.
And about my own tests, some Amos programs of mine didn't work, some worked perfectly.
And those, that did, ran about as fast than on 060 (emulated on 175MHz PPC without JIT, yes, I was surprised too)
I guess, that "notworking" was coused by the way I was drawing gfx (using standard Amos commands, like Screen Open etc.), in short, using Amiga GFX chips directly.
(Hey - I'm not saying, that they should work - those commands shouldn't be used any way, just tried)
But using intuition screens seems to work well enough (with Amos)
Yep, I've done (lately) stuff with C aswell, progressing rather nicely with my newest project...
But trying Amos code seemed more like "test" as many consider that "really hacky" :-)