Interesting debate this one and for me there isn't a one size fits all approach that truly works. At my club we have a number of approaches - at the top end of the sides nets are quite structured, focusing on processes initially and then more scenarios as we move through the winter phase with bowling machines playing a part but not too heavily as for me they don't help judge length, read the wrist etc. We also do lots of work with sidearms except muffins who sill does throwdowns! Other sides though just have an organised net, if they're looking to work at something the captains / peers will try to help. Sometimes I might wrongly judge these as poor nets - but they are fun and the lads keep coming back! For the vast majority there's no financial incentive to practice so I think it's vital practice is fun - and if that involves some slogging so be it - I'd rather have folks slogging in a net enjoying it than being subjected to regimented training and being lost to the game!
We all have different motives, some to be the best they can be, some to win cups, some to escape the mrs and kids in a Saturday, some to have a laugh with mates. For me cricket is a broad church and we should embrace and cater for all, whether that's in how we train / practice or the format of the matches that people can opt to play in
Oh and as an aside with our best kids and our top two sides we do practice range hitting outside and a couple of sessions of slap and tickle inside - we practice how to dominate the first ten and we practice how to dominate the last ten!