Synergies is one thats popular (always put at bottom of mod list/load order). Some ppl like the far east packs as well. As far as multiplayer, there's a prob plauing it with mods (each player has to have the same mods in the same load order or it wont work).There are other mods for increasing bag/shared bag space not sure whats the pop one right now tho,You can always search the workshop based on most pop mods or mod combinations (this helps with the issue of only 10 mods as ppl use the guts tool to combine several into one pack).