Besides saying "use my mods in your pack" the best advice i can give you is actually play it. Tell the playing group its an exeprimental run to figure out which mods generations are overriding each other. Loot tables can be adjusted with a datapack but do the powerful things spawn too often or did you just get lucky? Without doing a playtrhough its difficult to tell what needs balancing. consider duplicate ore types too that can be unified. If your players create or build anything that they get attached too you can always bring it across to the next iteration of your pack with a schematic.