I view a remote relationship as strong enough if I would willingly refer someone for a job and they would refer in return or I would trust them enough to do a small contract project with them.

As for how I am perceived on Slack, I view my team as a single point of failure and make sure that I am always in a position to get other similar offers. Makes how I am perceived not really matter as I am not the kind to go for an internal promotion anyway as it is more complicated, and again, a single point of failure.