A quick contribution from me, regarding how this tactic works for lower league/weaker teams. I've been using this tactic for Fremad Amager in the Danish second division. I promoted to the first division (of course without any transfer budget and hardly any wage budget) after one season. Can't show screenshots due to a revision of the structure of the Danish second division after first season. I finished on top of the table, media prediction was fourth.
This is just to say that this tactic has worked very well for me, even if I haven't been able to acquire players that even remotely fit the recommendations of the creator of the tactic. So it's been very low maintenance for me so far. I'm doing my best to follow the guidelines of the original post, but when it isn't possible (which is most of the time), then to heck with it. It's worked for me anyway.
Here's a screenshot of my striker from the first season:
View attachment 231173
Also, the second season has started very well. Still without transfer budget, so the squad hasn't improved much since the promotion, the squad in itself probably shouldn't be able to save me from relegation, media prediction is 12th place:
View attachment 231172
I doubt it will continue like this, but avoiding relegation is looking highly possible already. All in all, if you want a low maintenance tactic without the hassle of manual marking and stuff like that, give it a try. So far I have no complaints.
EDIT: I maybe should mention that I'm using V8 of the monstrous plug & play.