A collection of Mods to compliment and complete the Skyblock Brutalism experience, with extra consideration for convenience and multiplayer support. Configuring the Reduced Grinding Mod is very helpful, sadly I can't just include that in this collection, so please change it manually. I suggest:
*Slime Staff from Pinky: 3
*Multi-bobber potions to 1, 3, and 4 lines
*Increase secondary minor fishing reward chance
*Nice Present and Pumpkin Moon: 1
*****Sleep Time Multiplier: 8***** Most important setting to save time with fishing and biome spread. (sleep through 1 day in 1 minute)
*Enchanted Dial Cooldown: 3 days
*Traveling Merchant: 2-4 dice rerolls
*Skeleton Merchant ignores Moon Cycle: 2

I also suggest disabling the Automaton NPC in Magic Storage if you know the mod. He just takes up precious NPC space.

Changing Things?
If you want, Most mods added will probably work, but they may accidentally make the progression easier. Note that the first mods down through Evil Biome Mimic Counterpart are pivotal to the experience though nothing is strictly required. Just below that are basic quality of life mods that I imagine no one wouldn't want installed. From Better Zoom on it's a matter of opinion. Lastly, Better Crafting Interface is great for me, but won't work well for some people.
I'm lacking a Server Sided Characters mod in this list. I tried SSCS and it had issues with starting items (the book), then when I got that set up it failed to retain player spawn points on relog or the book's item data from the starting item choice. Hit me up if another alternative works reliably without bugging out other mods.