Ok, reviving this thread for a bit.
I actually worked on my picking during the last months and there's noticeable improvements here and there. Which IMO also have to do with picking strength.
First thing I noticed was that I just needed a certain picking strength for certain things, especially when trying to "milk" certain notes. So that had to stay at least sort of.
Otoh, for faster runs, things seem to become noticeably easier when I pick somewhat softer (in combination with not digging into the strings just as deep).
Now, at first this sounds like "so, with faster runs we don't need to sound as articulate?" - but in fact, IMO the opposite is the case, at least on any kind of overdriven sounds, note separation actually seems to become better when picking a tad softer. Makes sense physically as well, as the string amplitude is lower, hence there's less sharpness following the attack (which can always become an issue with hard picking).
In a nutshell, I like that kinda progress (fwiw, I'm not particularly picking faster now, but things feel more relaxed).
One problem remaining would still be clean leads. I just like to pick clean leads harder, so I'm not exactly sure yet what to make out of things.
Fwiw, I found it to be a decent balanced picking strength when trying to pick as hard as my fingers in hybrid picking mode. Not too easy to get there, though.