Councils definatley will not rip up and start again. As I suggested earlier tram tracks on wider pitches is the solutionHome ground advantage is just another myth in cricket. With regard to Diamo, if a visiting side can't work out where to bowl on a ground with 80 meter long square boundaries, they deserve to lose.
Widen, or dig up and relay? Sounds like you'd be asking for trouble adding to the sides of pitches if you get movement and if we think the councils will dislike the cost of relaying all the carpet, think about the duck egg they'd lay if you want them to put in a new pitch too. There is already a standard minimum width of 1.83m. Well I've never measured them but assuming all pitches within the competition comply, if it's such a big deal, just mark tram lines on the landing strips 1.83m apart at the return crease as a guide for the umpires. Problem solved without ripping up god knows how much concrete, although I don't think it's much of a problem.