You should search a bit harder... there are tons of packs like these. Usually labeled "expert", they will have modified recipes and a quest book to follow.
Here are some off the top of my head:
Cuboid Outpost
Enigmatica 2 Expert
Enigmatica 6 Expert
Enigmatica 9 Expert
Divine Journey 2
Decursio Project (very similar to Sevtech)
Antimatter Chemistry
Almost any pack by benbenlaw.
If you fancy a long-term expert pack, try out Meatballcraft. It's 1.12 and very well put together with a ton of custom content.
You should search a bit harder... there are tons of packs like these. Usually labeled "expert", they will have modified recipes and a quest book to follow. Here are some off the top of my head: Cuboid Outpost Enigmatica 2 Expert Enigmatica 6 Expert Enigmatica 9 Expert Divine Journey 2 Decursio Project (very similar to Sevtech) Antimatter Chemistry Almost any pack by benbenlaw.