TfL's brief says that: "The design will require applicants to take into consideration certain utilitarian elements, as required by public seating, such as being commercially viable, having a repeat pattern, and not being too small to cause 'dazzle' or 'strobe' visual effects.
However entrants are also encouraged to challenge conventional ideas of traditional seating fabric designs where possible."
I'm not sure what those conventions are but I imagine the design's "wear and tear" will involve being able to soak up booze and crisp crumbs and have the ability to hide footprint & vomit stains. Something I'd also love for the Piccadilly Line moquette is an anti-bag resting repellent (it covers all the Heathrow stations). It would sound an alarm or leak out a flourescent paint whenever it came into content with luggage or the base of a rucksack or large bag.
If there's anything else you'd like to see on Tube upholstery, I'd love to know.