I don't doubt for one minute that that WILL happen. Loads of people have (rightly) criticised how 'industrial' it looks on the concourses with vast expanses of plain concrete walls. To me, it was similar to going to view a brand new house.I've seen enough to know that with a proper decorative fit-out, both the concourses and the stadium itself will be absolutely magnificent.
It's absolutely fantastic but still looks a bit sterile. As with any 'new build' you need to stamp your own personality on it to make it truly a home.
Imagine it when its fully furnished. I would be amazed if every single wall isn't adorned with Everton branding, photos of former players etc.