A friend of mine had a similar heuristic back in the dot-com boom days. "Would I use their web site?"
I've been applying a modified form of his rule for the cryptos that I hold. It might be a great idea, but if I don't see how I, personally, can make use of it, then I'm not interested.
As with your rule, Steem ranks high if you sort the cryptos that way.
Great way of looking at it... If you don't want to use a website/blockchain, why will someone else want to? Makes it easier to recognize weak execution.