myStartsystems
Here’s the successor for newer Stellaris versions:
https://steamcommunity.com/sharedfiles/filedetails/?id=1965047231
It includes.. I’m not sure how many systems. 😀 Most of them are a little OP since I wanted to make some of my AI empires a little bit stronger in different "flavors". Especially one system containing a ring world around a dyson sphere and "ARU – Automatic Research Unit" – a level 5 think tank. Some contain more physic research and some many mineral deposits.
You’re welcome to download this mod if you want but I didn’t make any extra locale files. Therefore one or two names might be in german and when you click through the start systems in your empire creation screen they have "weird names" with underscores and such (actually the names I gave them in my file). However it’s only in the menu, that’s why I was too lazy to tackle this issue.
So feel free to give it a try. Maybe I’ll turn it into a bigger mod containing localization files then.