Im maybe not the one to answer this as I just got back my self to the forum and I have only played SH5 in the franchise and maybe 1h of SH4.
I think if you kept playing and follow along since the mods started to appear you now have a freaking awesome game with all your mods installed that you would have added from the start of mods until now.
I have 50 active mods as of this moment and are happy with the game but Im sure there is much to fix. As I just started to play again om not sure all of the stuff works in my mod soup but I am happy with it even if there's a bit of old versions in there.
Here is some useful links to look at:
SH5 Popular Mods, Tools, Technical advice & Tactical tips
SH5 Mod Guide for Beginners
[INF] sobers mega mod
And welcome back