By sacking him we just end up back in the same cycle. Patience is a virtue- its notable that the three most successful managers in English football, Alex Ferguson, George Ramsay, and Arsene Wenger, were all in the posts they're best known for for upwards for 20 years. Famously Ferguson and Ramsay didn't win their first league titles for 6 and 7 years respectively.
Our new set up is designed that the head coach can be replaced easily without disrupting the direction, style, and philosophy of the club. The two most famous exponents of that system are Ajax and Barcelona. However, the two identified progenitors of those systems are Rinus Michels at Ajax and Johan Cruyff at Barcelona (although Michels was there before him obviously). Michels had 6 years in charge of Ajax and Cruyff had 8 years (in two spells; Michels had 6 years in two spells at Barca) at Barcelona to bed those systems in. It all takes time.
We're an underachieving club in an unfashionable part of the country, not dissimilar to many other clubs. We have to do something to make ourselves stand out. This could be it but it has to be done properly. At some point, we have to give a manager time.