Optimally, a sync engine would have the ability to be configed to have the best settings for the project (e.g. central server or completely decentralised). It'd be great if one engine would be so performant/configurable, but having a lot of sync engines to choose from for your project is the best alternative.

btw: excellent questions to ask / insights - about the same I also came across in my lo-fi ventures.

Would be great if someone could assemble all these questions in a "walkthrough" step-by-step interface and in the end, the user gets a list of the best matching engines.

Edit: Mh ... maybe something small enough to vibe code ... if someone is interested to help let me know!