Assuming the club stays in the hands of the current owner, and the Board decide to change the management team, I think you're right. On the other hand, new owner(s) would presumably mean more money so, a manager with a better Loss Ratio could be possible.
As with so many things in life, timing is key. If the board doesn't twist now (history suggests that this is the time in a season when they would) then IMO Hecky stays for the remained of his contract, at least. If, OTOH, they twist and go for a new management team now, then we're stuck with the current players and the calibre of manager would need to be MUCH higher than the likes of Potter, to get a significant enough tune out of the players to stave off relegation. If survival is the objective, even substantial changes to the playing staff, in the JTW, would be a tough ask for any manager, be they new or old.
Bottom line is, we're unlikely to survive. We don't look like being sold early enough to bring in someone good enough, in time to survive. If we're destined to go down, we're even more unlikely to attract a manager that's a genuine, marked improvement over Hecky. May as well stick and ride out the remained of PH's 5 year deal and see where we are in May 2026.