Good afternoon Aternos Team,
Your services are just excellent and have so many modpacks and mods to choose from. However, there is one that me and my friends really like that unfortunately isn't on there. The modpack's name is Revolution 3. It is apart of AT Launcher and adds loads of new mobs, items, weapons, etc. (My favorite weapon of choice are some of the guns like the guided missile launcher.) It's a great modpack full of unique creative and survival potential. Granted, you guys have some of the mods to make this mod work, but you are missing around 10 mods for the machines to actually work. One of them being the turret which needs working pipes from this modpack. I really hope you consider adding this modpack. Thank you for your time and have a wonderful day! 
EDIT: Forgot the link (my bad). Here it is: https://www.atlauncher.com/pack/Revolution3