Every time I look at these, I don't think they'd be bad at all and only mirror what other clubs have done.
Slim chance it'll look like that though.
That looks quite nice, really. Also so many other clubs have that kind of banners either promoting the club, sponsors, new kits etc... The biggest problem is with how it's being done, as long as it's classy I doubt people would have that much of a problem.
PS: But that adidas logo would have to go.