It was initially made for private use with a small friend group of up to 8 players, the Essentials mod, enables Singleplayer world hosting across long distances.
Personally i recommend to play it with a skylands data pack, since it makes the use of aircrafts more sensible ;D
The valkyrien sky's mod allows players to make moving bases, i have tested some create machines and they seem to be working fine
Well now for the main core of the Modpack, the CREATE mod as usual steampunk minecraft from rails to planes and even factorys, its possible to even create more obscure items like ore farms, there are lots of helpful tutorials online and included in the mod itself.
for the exploration part I've added the Yungs collection of remade vanilla structures, sky castles and villages, aswell as the dungeons arise mod
There is even a mod for the more teritorial folks the open parties and claims mod for your homeland security :)
Anyways do enjoy playing
if any issues arise just hit me up on Discord and I'll try to fix them @okamiseppi

