The Stardust progression stops after we reach roughly 50% of Terra Nova, when we buy the third Singularity Cannon. At lower tiers that would be when we save up for the next tier, but there is nothing beyond the Singularity Cannon, every upgrade after that is a linear gain for exponential cost. You buy the 3rd cannon around 50% of Terra Nova, then you finish that planet before the next can be bought.
After that, Pyralis is a pure grind. You only double your speed over the course of its conquest, a far cry from the ~4000x growth during Terra Nova.
The Kickstart Ascension bonus is quite bad. After a few Infusion bonuses the start is so fast that the Kickstart doesn't matter. The first point lets you buy an Orbital Laser, I didn't upgrade it any more.
A common quality of life improvement in modern clicker games is to simulate clicks when the player holds down the mouse button over the clickable area.
