Withmain profile you would have access to your progress across all editions for 1 episode. It could store all your stats, settings, unlocked unlockables and highscores. In CI5 it could also store your spaceship customization.
Overall, if CI6 ever becomes a thing one day, i really hope that the unlockables system is not the same like ci4 and ci5, i think the system of ci3 could work quite well with some modifications or another complete different system that is less grinding fest or just the solution that you purposed, it also whould be great enough.
About editions, I agree they could be more efficient if they simply were an asset pack that gets loaded instead of standard, as you legitimally cannot find an HDD smaller than 160GB even on e-waste landfills probably.
Chicken Invaders 3: Revenge of the Yolk Careers InterAction studios
On this page just 51 people have more than 100 hours recorded. I checked all 20 subpages. This is just 5.1% of players in the top 1000. And mind you, it is the present state. Before CI4 released it must have looked different (or at least the number of people since the percentage could be the same).
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