I love me some Igavanias but this is 100% a "thanks but no thanks" scenario for me.
I dunno I feel games like Aria of Sorrow and Order of Ecclesia are better designed than like SOTN in many ways. Audio/Visual downgrades won't be an issue for a modern game. As I said before though, and in agreement with you, IGA isn't the man for this job.
If they weren't already busy with Indivisible, I feel Lab Zero could do 2D Metroid well. The Indivisible demo was already impressive in a lot of ways, many people at the studio are fans of the series and it's pretty clear to me that Mike Z understands Metroid level design super well if you saw his Design Run streams on Super Metroid:
Part 1
Part 2