Haven't necessarily noticed major changes in cleanliness, but on the bus side I have anecdotally noticed an uptick in the number of branded route buses doing other routes now. Pink buses doing the Haworth runs and what not. It would make sense for them to adopt a common livery across the companies and stop giving each one 5+ sub brands, I think ultimately this will end up being the biggest visible change from the previous era.
It never really made sense to do it in the first place and the biggest offender of it was when they took over Rosso and tried everything they could to get rid of any trace of the brand. Felt like every bus got a different livery for a while there.
It'd probably make more of a mess trying to adopt a common livery now, particularly as the closest thing they have now is a dull grey and probably not a good choice. A lot of the sub-brands are pretty long standing things as well in some form.
I agree they went too far with Rosso though - it was as if everything had to have its own brand. There must have been nearly a dozen of them, plus the rarely-seen core Rosso brand changed from the old red and white to yellow for no real reason, but the main service actually in Rossendale became purple. I think they could have had some route branding without making it so complicated.