@rudderrudderrat:
I'm thinking of the worst-case scenario where ADIRU or pitot tube failure occurs at or just after rotation. If you're going to inhibit based on WoW, this potentially opens a can of worms. A spurious SW at FL250+ is one thing, but it's even more deadly on climbout.
In general, when making amendments to complex systems behaviour it is important to ensure that providing a solution for one failure mode does not adversely affect the solution for existing failure modes.