I think the Master Plan should at least include waiting for reviews and especially seeing what Digital Foundry reports.
If people who are already accustomed to higher fidelity gaming on other platforms are indicating they are having a blast, I think its "safe" to just jump in and enjoy what Nintendo has gone over-budget (in both time and apparently resources) to produce.
All assuming you are or have been greatly anticipating the game, of course.
For me, my nephew will be on this game Day One/Second One. So decision is made for me!
I may well have waited otherwise despite being sufficiently hyped by that final trailer.
Edit: Was just in the "Saxual Content" thread watching the trailer again, the part where it really starts taking off, and thought: "Dam this looks fun". In light of that, even w/o nephew factor, I probably would have launched Day One after all