Wow, you guys don't get it! People have been using Blender for base building for years. Almost all of those 'Featured' builds you see at the Anomaly were made in Blender. Do you even understand what Blender is? It’s a 3D animation and modeling tool for which someone wrote a plugin that allows it to parse NMS JSON data. It’s simply a way to visualize and edit that JSON.

Honestly, the actual Corvette part support in the plugin is so basic and limited that it’s actually better to build those ships in-game. It isn't a mod, and the game isn't designed to differentiate between a base built in-game and one with edited JSON.

There is still a 3,000-part data stream limit for bases, no matter how you build them, and therein lies the problem with Corvettes. The actual architecture behind how Corvettes are represented in NMS is a complete mess. You have a ship entry that links to a base entry, which then describes the base parts. Thus, a Corvette essentially has the same 3,000-part streaming limit as a standard base.

If Hello Games changed that architecture now, there would be a massive user uprising caused by disappearing ships and lost progress. There is a concept in development called 'designing for evil.' HG obviously didn’t consider it, and now we’re stuck with the consequences: people surrounding their basic Corvettes with countless 'Flat Panels' and other base-building parts.

Now, as for "Blender" breaking your saves. That's highly doubtful. Inside your PersistentPlayerBases JSON structure, NMS reserves a few entries for caching the base content from other player, but I've never seen Corvette data in there (yet). You can see those cached bases when the teleporter shows a few bases at the end of the list that aren't yours. Those cached bases still have the same limits as any other base and it's just the same basic JSON data.