With a new ascension perk called Stellar Manipulation (requires tetradimensional engineering, star lifters and fusion supressors) you can unlock a new megastructure that can be built around any (vanilla or gigastructures) star to change it's size, either harvest it for stellar plasma, reducing it's size in the process, or inject plasma to increase it.
Stars can go all the down to a class T brown dwarf (needs to be ignited with a substellar compressor before being injected) all the way to a massive class O star




Another mechanic added is the systemcraft assembler, after attack moon and planetcraft printers the systemcraft printer is now here, locked behind 3 APs needing the stellar injector, Systemcraft and planetcraft printer techs you can build a systemcraft assembler capable of "printing" a systemcraft in one stage without needing to spend pops or make separate attack moons and planetcrafts. This systemcrafts are more expensive and take longer than usual but receive hull and fire rate buffs




And last but not least the O class systemcraft, can be built normally around a O class star (still uses pops and separate celestial crafts) or printed in one piece, at a much higher cost than a regular one this might vessel counts with a x5 stronger reactor capable of handling up to 15 erasure beams, more armor slots and more T and XL slots.

O class systemcrafts are unlocked by having the systemcraft hull upgrade tech and the tech for class O dysons







The original mod was made by Quollveth and then maintained by Banjomarx, but Quollveth has stopped stellaris modding, as has banjomarx (at least for the time being) so I decided to update the mod myself, with permission from Quollveth



French: mod_detail.php?publishedfileid=3279058253
Russian: mod_detail.php?publishedfileid=3033118635

If you have any issues, questions or suggestions, contact me @tempest1273 in the Gigastructural Engineering & More discord server