Broadening one's experience is almost always a good thing, I think. However, at the same time, I think it useful to learn from the past.

One lesson I've learned is that when a team of designers produce something that is extremely flawed and then, rather than throw it out and start again, persist in coninually patching, updating, adding and subtracting, and generally confusing the issue such that it becomes worse than a ball of wool with which two cats have spent the afternoon, then what is to be learned is: leave it alone.

I admire your tenacity and perseverance but I have no doubt that there are many other much more valuable opportunities and areas for broadening your knowledge and experience than wasting your time on an Operating System that has never been satisfactory and which is now running on a processor line that has almost certainly reached its use-by date, or passed it.