Im not suggesting we could attract a world class manager - but surely the likes of Mancini, Erik Ten Hag, Rudi Garcia maybe even Mourinho who's stock has fallen.
Someone better than a bloke who's only achievement is winning the Greek League and relegating Hull.
Well I'll take on each question. Mancini for me is completely the wrong type of manager for us. His last 3 jobs he's bombed at (Gala, Zenith and Inter). In truth he has bombed in all jobs (Lazio & Fiorentina too) apart from Inter the first time and City. In both jobs he had the biggest budgets in the league available to him. I just don't see the fascination with him. I suppose you could could make an argument we are similar to City when he arrived and initially he took them to the next level. For me though he would be a big risk.
As for Garcia I actually quite like him as a suggestion. He did well at Lille (who are similarish to us) though he did seem to fall away there as time went on. Likewise at Roma he performed well, and they are a big club, so good experience there. Again though the guy massively bombed in his last job at Marseille didn't he? (Albeit after a promising start). Lost something like 13 in 22 games. So again some risk there.
I like Ten Hag, he would obviously be on any shortlist for a manager we could have. I'd like to think we could get him.
Overall though I think you are harsh on Silva. See what happened to Huddersfield last season, Hull were in worse shape than them and he gave them a fighting chance. He did well there. In most jobs he's been at he has left them in a better position than he inherited. If improvements don't continue we can ask questions, but 3 games is much too early. We also have to be realistic enough to say he has improved us thus far.