I don't mean it as a gotcha. I don't believe Glasner would be a particularly good choice - people mention him like he's some kind of trophy whisperer, and of course he did win the FA Cup, but it should be noted that his CV in England does also include one of the biggest upsets in the history of the competition.
It's his League form that would worry me, apart from that run at the end of 23/24 where Palace were winning every game it hasn't been too impressive. I personally think both domestic cups are currently very unlikely routes to Europe; qualifying through the league is the most likely pathway to the Europa/Conference, which in my mind is the way to trophies/regularly challenging in domestic competitions for Everton. Average league form and the manager throwing his toys out the pram won't ever help that.