Lighthouse by itself seems nice. Mostly, I like the simplicity and ease of use, but Github's integration with Lighthouse seemed interesting as well. The idea of closing Lighthouse tickets by putting a special notice in the Git commit log sounds like it might be a vaguely useful feature. (Rather than, say, a useless gimmick.)
But I'm really not a fan of how it floods the Lighthouse project with every single commit I make. There's a commit log on Github, where I can actually see the diff; why would I want a second, crippled, spammy commit log on Lighthouse?
Unfortunately there doesn't seem to be any way to disable sending the commit logs while still keeping the ticket-closing, so I'm just going to have to disable Lighthouse integration altogether.