But for a few days now, HN has almost read like a long ad for one domain registrar that doesn't look like anything particularly special. Every other link seems to go to Namecheap's blog, or some other page on their site.
Genuine question - I'm not trying to be a self-appointed site moderator or cheerleading for some other company (although I do use Gandi myself), I'm just genuinely interested as to why Namecheap, and not some other registrar, other than the fact that Namecheap have jumped on this particular bandwagon.
Then you haven't seen all the options.
I was directed to this page only after the transfer started (and thus after I could change this). Hopefully this might help others before you make the switch.
Highly recommended.
Gandi will even offer to mirror the DNS on import.