Using the new into

Now that into has been finalized (in the upcoming 3.9.0), I’m looking for places in my code where I would benefit from it.

My question is: Is there a danger of overusing it?

For instance, I’m looking at custom extensions I have:

extension [A](collection: IterableOnce[A])
   ...

Is there any drawback in generalizing to:

extension [A](collection: into[IterableOnce[A]])
   ...

?

given conversions to IterableOnce would enable my extensions no mater what. Using into only means it now happens without a warning. Is that bad? In short, is there a good reason not to sprinkle into all over my code for added flexibility?

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