We struggled with having no proper RB for years. Valencia was largely very poor there, sometimes able to do a job but never offering us an improvement on our football. Rafael was better.
Nani shouldn't have gone when he did and certainly not for that amount. He wasn't passed it, just very inconsistent, and the manager wanted to impose their (shit) style. He would have been useful seeing as we also had wing problems for so long, and still do.
Hernandez would have been a useful backup if willing to play that role, considering we've been in a position where we've had no strikers, and have lacked goals and options to get them many times.
Blind would have been massively useful because he has a head on him and play in multiple positions.
We needed better than Evans, but he'd be better backup than Jones.
None of them world beaters, all would have improved us in the following years in my opinion.
Rafael in his last 2 years was getting injured more than half of the season. Starts well then gets injured fast and never manage to return well for the remainder of the season. Yes he was great in Fergie's last season but that's about it. Beside Valencia was actually great and well praised up till the end of 2016/2017 season.
Nani was past it by the time he left. He spent the remainder of his career in Portugal, hardly proved he was still good at top level.
Chicharito thought of himself as better than back up, while in fact he was never good enough to be a main starter in a top team especially at modern age when strikers are tasked with more than just scoring goals.
Blind simply never proved himself 100% in any position he played. Decent as a CB, but with many flaws appearing in many games, very slow as LB and a terrible midfielder whenever he played there.
Evans spent the majority of his last few seasons injured and I can bring his performance thread here in LVG's first season when the most was attacking him and had no problem with him leaving. Sure, he's the only of the lot who found form after leaving, but by that time it was the right call.
Simply the problem in most of these is the replacements were mostly pretty poor or non existent, hence people believed we lost them. The reality is all of them deserved to go by this time. We just didn't do well on the buying department.
IMO each and every player we sold post Fergie deserved to go. The problem was only we had many flops in buying players.