It wasn't too 'ambitious', it was just ugly interface design.
Something that Apple should get with the whole 'it just works' moto.
That and people have libraries of 1000's of songs they have collected over a lifetime. And then to mix that all in with the streaming was a mistake (at least for some people).
The new design does go part the way of fixing some of the issues.
They should at least offer a Apple Music App that is separate to Music for those that don't want to mix their Libraries.
And for those that don't care, just to toggle to use the 1 app.
The real area that needs serious attention is iTunes. = bloatware 2.0!
Split that stuff out into separate apps. Who wants everything synced through 1 app that is a complete mess.
What Apple needs is a few people that say 'no'.
It seems that everyone is in the iCloud floating along nodding in unison to Tim's every step.
They need the 2nd coming of Scott Forstall. I don't like the design stuff he used to push, but it sounded like he pissed people off. That is great. As at least then you have to rise above the noise to find a better solution.
Think of sand paper and wood. Lots of friction/conflict but the outcome is a nice smooth surface left behind.
Steve himself was famous for saying no. However the reason he said no was to find a better way.
Sometimes I like to think, oh maybe Apple is dragging their feet on purpose to keep the share price low. The reason is they announced a share buy back ages ago, and if they can get their stock cheaper, they can buy more of it.
(Which would increase the individual share price once the buyback is completed making all the execs more cash)
It just seems a whole lot of magic has been lost at Apple.
For me it started with scrapping Aperture which I used since version 1.0.
To all the other stuff ups: Maps, 1 port MacBook, no computer updates, soldered in ram - the list goes on and on...
I hope they can turn it around...