Until Jeff Lynne came along I'd never heard of ELO and until now I have never heard of any of their songs or albums (guess I'm showing my age) and for all intents and purposes judging by the reaction of anyone who's heard ELO.. I haven't missed anything.
The sound of Cloud 9 and Brainwashed are very different so I'm not quite sure what Lynne is being accused of. Flaming Pie sounds more like BW than CLoud 9 and Free As A Bird was pretty cool.
All those albums aforementioned have great songs so Lynne or no Lynne he's fine by me.
FLowers I think has a slick production and it stands out for the good (My Brave Face, This One, We Got Married) and for the bad (Rough Ride, Figureo8, Don't Be Careless Love). The live versions of Figureo8 and Rough Ride are miles ahead of the studio versions imho.