I have about a dozen global context variables that reflect the state of sensors. It would be very handy to be able to see the current state of some or all context variables without adding debug nodes. The refresh rate would have to be a setting, and the default could be 0s, meaning "refresh on demand" (current behavior).
I see that braunku asked for this last year](Context auto-refresh option), but I don't see much discussion about it.
I'd put this in the category of nice-to-have. What are the drawbacks?