We're back to the 90s again, albeit with more competent players minus the real stars we had back then. At the time, you entered every season thinking that if Anderton and King could stay injury free, if Ginola could add some end product to his game, if Sheringham kept scoring, maybe we could qualify for Europe. Then, a few months later, you were stuck watching Andy Sinton, Ruel Fox and Stuart Nethercott run the show.
These days, we don't even have difference-makers. Just average players, with a couple of guys who could turn out to be good players in a few years' time.
Regardless of Frank's future, once again, we're faced with a massive mentality issue. In the 90s, when a manager was sacked, you read about players saying 'We have to hold our hand up and admit we're responsible'. And then... nothing. Just more of the same. Like him or not, Mourinho didn't take brick from the players, he demanded commitment from them. When he was sacked, Kane and Son (our only world-class players at the time, coincidentally) were the only ones to express their disappointment.
Then we moved on to Conte, who also demanded commitment and ended up blowing a gasket in front of the press.
None of them were blameless and their style of football left a lot to be desired but you can't argue that they are/were elite managers. Nobody in their right mind would compare them to Postecoglou or Frank.
Likewise, Pochettino turned things around when he oversaw a significant power shift inside the changing room.
At the end of the day, you can hire the best managers but if the mentality's not right, it won't make a difference. The club culture is completely wrong and so far, nobody's been able to address that. We thought winning a trophy would shake things up but it didn't. We can argue for ages about the quality of the squad, whether it's good enough for Top 6, Top 10, Top whatever but when we sign players from other clubs, clubs that are supposed to be weaker but somehow end up above us in the table, suddenly, their worst traits come out (Bissouma and Ndombele say hello).
A complete overhaul of a squad requires either a lot of investment and faith in the manager (won't happen) or extreme circumstances that forces someone's hand. So far, we've had neither.