Whilst that’s clearly a disappointment for some, I genuinely couldn’t care less. I’ve held accounts with Nationwide for over 15 years and I can’t say I’ll miss their previous branding. Times change, everything moves on, people sadly sometimes can’t or they make such a fuss over literally nothing, they forget about genuine real world issues.
I guess this is why forums now essentially exist, so that folks can moan in public about how crap they think their bank is but bizarrely continue their relationship with said bank instead of doing what I said earlier 
I’ve just this week dumped a provider because when I opened the App, a full screen advert appeared for something I as a customer don’t want to see, ever, period. I can’t ever change what that particular providers current stance is either by complaining directly to them or by whingeing on a forum about it, so I cut them loose. It was one of the shortest money institution relationships I’ve ever had. For me, it was affirmative action.
As for Nationwide not being a ‘bank’, I am absolutely aware they are not technically a bank but in my head, they still are a ‘bank’. To me they look like and feel like a bank because in my everyday world they act no differently to any other bank account I hold.
All that aside, I like their refreshed look. I accept it isn’t everyone’s cup of tea but I just personally can’t upset over particular colours or spacing or what the house with the rising sun looks like 