DW is having to build a football team from the ground up, severely hampered by the legacy of numpties like Blackwell and Adams. It's a long term job. If he's not the right man, it doesn't mean we should abandon the right principles.
This quote contains both the only part of your post that I agree with and the biggest bag of bollocks I've read on here for a while.
The part I agree with is that we shouldn't abandon the footballing principles on a whim and just get a clogger in for the sake of a change.
Now, on to the bollocks. I really do not buy this "DW is having to build a football team from the ground up." It took Wilson one close season to get the same bunch of players playing a completely different style to A. The one they were used to and B. The one they were signed to play. Granted, they were playing against opposition with less ability than the previous season, but it wouldn't have mattered who we were playing. We effectively changed the style before the season even began.
We weren't playing hoof all last season, or the season before. Players were passing the ball well, then moving into more advanced space ready to receive it again. It isn't, as some might say, rocket science.
Why has the change, that involves moving 1 (yes ONE) player further back in the formation (442 to 451) still not clicked? Why is Weir making an absolute pig's ear of it this season? He doesn't have a massive task, but he is making it appear that way. He has been allowed to sign players, decent players for this level (if it is actually him that has chosen them).
Wilson got a team that was used to kicking it high and far to pass and move, score goals aplenty and not concede many. Before all his best attacking options were sold, we scored at will. When they were sold, he adapted his style slightly. We still didn't hoof it and we still didn't concede. Weir has been able to bring in the likes of Baxter, King, Cuvelier and Brandy, yet we still can't play as effectively as we did without these. He has signed these players specifically to fit his style, but he cannot get them to play it. He is an awful manager.
The passing style isn't the problem the clueless numpty trying to implement the system is the problem.