Personally, I've always liked the 343, I see it as a modern day 442. I actually think his system would work really well with us and in the league with its focus central attacking connections. People won't want to hear this, but it reminds me of some of the movements we tried to have under Ole, which is why I think with a better manager who has a high focus on this strategy it may work.
He seems like a good manager, for me, after the debacle with Ten Hag, I would have preferred a manager who has had success in Italy, England or Spain, however, that is a lot rarer to find than I would like to admit. His system is solid and seems less complex than Ten Hag's, which is a positive, as I actually felt that we were overly fluid. I think Ten Hag's tactics failed because it required too many patterns to work in order to succeed; in addition, focusing so much movement on those patterns, led to us not being solid. Essentially, we had an overly attacking system that didn't work and left us exposed to easy counters. I personally think that was a direct result of the total football line of thinking, that only a few dutch managers are actually able to successfully employ at the top level. The fluidity required, makes England the least likely place to have success with that philsophy due to the intensity of the league.
I think Amorim's system is more straightforward with different simple patterns that can lead to success. Despite this I think as a club, we need to be more careful in crowning a manager, and not holding them accountable for poor results, even early into their tenures. A bad performance shouldn't simply be dismissed. He has to prove to us that he belongs here, and we should act like that.