Tiles are gone, and have been replaced with Districts, Buildings, and Jobs. The purpose is to make the management of planets more fun and engaging.

Stellaris has (once again) undergone bold changes! In 2.2 the focus of the changes has been to rework how you develop planets and to deepen the game's economy. Please be advised that 2.2.0 WILL UTTERLY DEMOLISH SAVES from previous versions! If you have games that you want to complete, please roll back to the previous version before trying to load the save. 'allow' (where the user will see what they have to change to access the option) but that's the idea behind it.Changelog for Update 2.2.0 (added 06 December 2018) - Part I: I don't think Paradox does a great job of deciding what to lock behind 'potential' (where the user won't see it if they fail the conditions) vs. It's just that there's not a single civic (unless you add them with mods) having a 'possible' block allowing more than one of those authority types (the four 'normal' ones are clustered into a single check).

It's also done for the UI around things like civics and traits there's no inherent reason the list of available (or disallowed) civics changes completely whenever you switch between normal, Corporate, Hive, or Machine authority (in-game or at empire creation). For example, non-Machine-Gestalt empires don't even see the option for the 'Machine Age' ascension perk why should they, when it'd be greyed out all game with a message 'Requires Authority: Machine Intelligence' and that's not something you can change after game start? Even some things that you can potentially change (like getting the ability to terraform to a Gaia planet) don't show up if you don't have the suitable ascension perk or technology or whatnot (you'll notice that decisions like Resort World or Penal Colony aren't available from the start of the game, either).

Click to expand.It's mostly done to keep the UI sane.

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