@xeron
I think that MorphOS should improve its default MUI colours as it seems that someone thought "look! I can use gradients! let's use gradients of colours that hurt eyes everywhere". OS4 colours are IMHO more consistent.
But I don't think you are right about MOS having less apps than OS4.
For example, MOS2.x includes a proper SSH console as standard and xad support is included in Ambient as default.
MOS2 has Sputnik, and I think it's slightly better than using both NetSurf and OWB.
VICE is native for every amiga-like system. OS4 and MOS coders worked together (AmiDog ported it to OS4 and Piru and others added nice features like Overlay and fixed small bugs).
Transmission... well, BeeHive may not be perfect but it works.
Each platform has programs for the same (OS4 has the good looking Epistula and MorphOS has the much more stable PolyGlot).
MorphOS even had commercial games released like Robin Hood.
Well, the sad reality is that there are not many releases for next gen amigaoses. IMHO it's better to code in a portable way, support as many Amiga-like systems you can and forget stupid wars. Each one uses what one likes more and that's all.