This has been my passion project for a long time and I finally finished it! It is modpack based around Gregtech, Galacticraft, Tinkers Construct and more! You start at Stone Age and progress thru Steam, Mechanical age, then you reach electricity, fly to other planets, you get what's going on. I took some inspiration from SevTech, so if you liked that, you may also like this one. I've made a lot of mods, which add custom content and even made a full mod for integrating Tinkers Construct and GT, so you get how much work I've put into this.
You can learn more about it here: https://www.curseforge.com/minecraft/modpacks/gregged-grounded
Discussion, bug reports, content suggestions here: https://discord.gg/5w4wCE5bx6
good luck pismeno. I have high hopes for your modpack.