Frankly, many town councils have a job getting enough councilors to stand anyway so it’s more a question of who’s prepared to do it.
District councils are a bit better, but not much.
Having attended a couple of district council meetings lately to do with the development of a core strategy document and also a planning application for a windfarm, the ability (or rather lack of ability) of the councilors to even follow the presentations being made by the council officers was frankly embarrassing- half of them to my mind were just too stupid to do the job.