Games every 2 or 3 days is not something that I would in favour of.
Day and night games is an interesting question. I remember sunday league before private leagues were introduced and it wasn't as good. Could playing private leagues at night with division games be a good idea? It would be interesting to hear people's opinions.
"Not as good"? Yet it survived so many, many years on many different servers.
PLs were only introduced to bring in revenue once things had gone downhill and there are (or were) plenty of managers who couldn't afford them so lost some interest. Personally I would have just doubled or trebled the fee for Friendies (or maybe have two Friendly leagues running simultaneously with different pricing structures and different prize levels) with training and gelling benefits in both but entry only allowed into one or the other.
But that's water under the bridge. I can only guess but I'd suggest the vast majority of prize money dished out in PLs goes to a group of 6-12 managers. Everyone else really just makes up the numbers and all for no training or gelling benefits.
I'd also suggest there has been an increase in daytime players who are mostly younger and not having the benefits of night-work, living in a foreign time-zone, having teething children or suffering age-related insomnia to keep them awake at night. That has also alienated some of the older loyalists who spent years playing for the "proper" trophies (Conference Champs, CL, EC and even the daytime Friendly League --- which is now just a chore to get training benefits where once managers would only issue or accept challenges where ladder points were at stake --- had kudos. Now I don't even look at the Friendly table. There are probably player now who weren't born when some of started playing SL
But hey-ho. We get re-structured or the game dies. That seems about it really. And just a case of waiting until we get told or boredom takes away any remaining interest for many/most.