It's a
fine choice for the very reason
@Clive explains...
... but each HTTYD sequel made successively
less than the movie before it, so it's not some kind of a juggernaut franchise. But it also doesn't need to be in order to be a successful land. If it's executed well and the attractions are good (we'll see!), it will be a solid area, regardless of the IP's pop culture relevance level.