We are experimenting with slanted signs, especially around the tarmac and taxiway areas as they usually have a lot of navigational signs but as @hccampos said it’ll unsure wether it will look any good. Airlines already have specific logos so we will probably implement a three tier color palette or something like that to support the perception of branded areas or objects, might however look weird or ugly if the logo isn’t present so we’ll have to do some thinking here.
In regards to airport branding, we have already started by utilizing the check-in desk panel (and the boarding desk panel will have the same traits). It has evolved a bit since this tweet but it is definitely worth checking out: https://twitter.com/AirportCEO/status/757244076664160256
@me123: Haha, I would say they are very detailed, if scroll in close enough you can even see pencils laying around.