In that link I pretty much explained what is going on, to an audio listener. Keep in mind though that there are no references. I can't say something like "more bass" or "more tight" or "wider stage". But, I hope we are learning something from it, like the 30,30 could be dedicated to "less dry".
The elements themselves (like Q2 only) might not even do something.
HOW CAN I KNOW ?
Bwaahahahahahaha
But of course LydMekk is right, it is an in fact undoable job to play with these when you don't know in detail what they do. Well, I of course know in detail from the technical point of view. For that matter I could reason out that the 30,30 would do what it seems to do. But that really is all.
I too stick to 4/5 = 0/0 and I will get used to the sound of 2/3 = 30/30. I think I am by know, to the sense that in ABX I would be able to guess the settings always. So, it starts to be time for adding one of the others.
Btw, besides dry/hall as we have now, I expect changes in the area of flanger. Or the other way around, the steadyness of a tone. Like a nylon string can be so much steady. But it can also float around a bit (on the same recording I mean).
And vibrato. But I think this goes along with flanger.