To offer a fair and balanced view, potentially worse off as a result.
All of those could be a massive hit or they could be massive failures here. To remove a proven goalscorer and replace them with players who could be massive failures en mass would be far too big of a risk to guarantee success so to speak. That is not to say i wouldn't want us to take that risk, but benteke for example has stepped up a level and failed before going back down to relegation level teams. Dolberg could emulate Van Nistelroy/Suarez or he could emulate Kezman/Maccaroni. Sandro could well be a decent winger or could struggle with the change in leagues, the other lad Zeyich could be eriksen or could well be terrible.
My point is only that to offer a unbias view, we would not be stronger initially from making a deal such as that, and any strength we did develop would be both over a long term idea and the fact the majority of the players would have to adapt to a new league and step up in level as well. But as i mentioned i wouldn't be against the club taking such a risk as perhaps it is those sorts of risks we are needing to make to attempt to improve as a team overall.
Edit- i could well be getting maccaroni mixed up with another striker Boro bought. Alves was it? I can't remember now.
Fair enough point to make, I think most players except say Messi, Ronaldo etc are gambles.
For me though I think we do need to be looking for alternatives to Lukaku, Benteke would suit Koemans style from a hold up point of view, something he tries with Lukaku sometimes, but Benteke needs crosses to pin down the full back and get headers on goal. We don't have that width now.
In terms of Dolberg, we need to be looking at these talents, they could save us about £30m in future, maybe even help us make £30m profit, see Romelu, Lescott, Rooney etc...
Sandro Ramirez for me is the gamble. Talented yet lightweight, who does that remind you of ?
We are at that point in the summer where we need a overhaul of about 7 players. We could do a spurs after bale window and change too much too quickly, or we could get together a proper squad capable of Europa league and premier league progression.
For me Benteke could be koemans pelle at everton.