This modpack is filled with 75 different mods so if you don't have the best PC you can still run it and it has a lot of new stuff. It doesn't have much of UI mods, but has some of the big mods like Blood Magic, Botania, Mekanism, The Twilight Forest and many more, The modpack also has essential mod so you can play multiple together with the mod.
In the modpack you can play and use new industrial machines which will expand basebuilding and ressource management. It will give the player a minimap in the top right corner where you can explore the world with new biomes and animals. You can modify and customize new tools and weapons with new ores. There is a lot more different food. There is also witchcraft and magic that you can use and create. Overall the modpack has a lot of stuff and still runs smooth for those with not the greatest PC.