Glasner complained about the size of the squad last year and having to play the same players into the ground. Now we have addressed the squad options, your complaining about unhappy players not getting a game. Have you ever heard of competition for places, too many players didn't have to try as they were guaranteed starts, not anymore Sage is ruthless with lazy players.
Glasner didn't play the same players every week because the squad was too small, he did it because the squad wasn't very strong. For instance, towards the end he played Wharton and Kamada into the ground but more or less froze out Hughes and Lerma, who could have played instead. We could all name the Glasner starting XI if they were all fit. The club had to sell Guehi over Glasners head to force him to pick Canvot, otherwise the same back three would have played all the time. He could have rotated more, he chose not to.
And why did he do this?
Firstly, because he, like Hodgson and Pulis before him, is a training ground coach who spends hours drilling the XI into shape, showing them exactly how he wants them to play together, constantly repeating, reiterating, and fine-tuning. Whilst that kind of work doesn't wholly prohibit player rotation, it does lend itself far more to picking an XI and working intensively with them. You don't want to spend weeks getting a high level understanding between a combination of players just to change the parts and lose the benefits of your work.
Secondly, because (to return to the centre of midfield) Glasner thought Kamada and Wharton were better players than Hughes and Lerma, and he wanted to win. There is a world of difference between having three or four top class players for two positions, and having two really good ones understudied by two lesser players. Quantity doesn't matter without quality. That just means rotating players makes the team weaker. Hence why Glasner didn't do it much.
The only reason our current bloated squad offers Sage the chance to rotate without reducing the quality of the team is that so many of them are very average.
Finally, I return to the point that in any walk of life you will get more out of people if they feel they 'own' it or cannot evade responsibility for it. A big squad with lower minutes for each is at odds with that. That's new for Palace, and we don't know how it will go.
I'm not suggesting there is no benefit at all to a larger squad. I recognise competition for places can be healthy, I just don't see how having four average players competing to play behind the striker is better than relying on two good ones. There is a benefit to fresh legs sometimes, but does it outweigh form, talent, and tactical familiarity? Not obviously. Different tactical options are useful in some games. I can see us, for instance, using Chilwell when we are on top of an opponent and Mitchell otherwise. That doesn't mean, though, that when Pino is labouring to affect a game its because he is right-footed and so bringing on McNeill will solve it. Football isn't chess. The problem, usually, is just that Pino isn't very good.
Overall, I just don't think it is as simple as saying small squad = bad, big squad = good. The budget for players is like butter; Spread it too thick and it won't cover the toast. Spread too thinly and it'll just be weak.