I doubt they will stray too far from the current path of how mods are implemented, this is the reason I took a big break from the game, It forces me to forget old habits and come at things from a fresh angle with a new drive to figuring things out.
Of course I will keep you posted on any success I have with an extra sound pack, in theory it should work but I can't promise obviously.
I wont post regarding that in this thread though, I will post to you via PM anything worth reporting.
Loving the idea of this mod manager, it reminds me of Skyrims built in mod manager where you can activate/deactivate mods from a menu, It would be good to be able to revert the game to default by disabling all mods then be able to try different mods.
As for 2K19, I am sure everything being tried for this game right now will be easily ported over, 2K18 modding now is more like preparation for 2K19 but of course it gives 2K18 an extended life for those that can't afford to upgrade for a while.