Lol, a blast thread from the past.
It is true that Nintendo often use most of their IPs, but if don't correctly, that's not a bad thing. If said games are spread out over a fair amount of time and make changes to following games, then it's fine I feel. They manage to feel new and fresh when introducing new mechanics and ideas, like what we've seen with various Mario and Zelda games for example.
When a series becomes a yearly series with a similar feel to previous games, that's when it can become problematic by becoming stale and repetitive.
Dance my pretties!
The Official Art Thread - The Official Manga Thread - The Official Starbound Thread