Fair points, but I think the Brands thing is a tiny bit unfair - it isn't reasonable to expect every signing to be a good one. You'll always get players who don't come good, for whatever reason.
It probably belongs in the Brands thread, but if you look at his signings, there aren't many you'd label a "total" flop
Sidibe on loan - Meh, some good some very bad, but a loan makes it a pass
Zouma on loan - Worked out well at the time
Lossl - Was only ever going to be a back up keeper, hard to judge
Digne - sound
Mina - Decent
Gomes - Very inconsistent, but capable of being class
Gbamin - Hard to say anything other than we've been incredibly unlucky with his injuries
Delph - Low fee and it hasn't really worked out so far, but if he could get himself fit he walks into this midfield as things stand
Bernard - Even though he was a free, I think this is his worst signing so far given his high wages
Iwobi - Young enough to improve, but you'd have to say the signs aren't great
Kean - Very raw but there is definitely talent there which needs to be nurtured
Also worth remembering that Brands signed all of these players with Silva's system in mind. There's a few there I'd happily move on, but at the same time there's still hope for a number of them IMO