Belmont:

I guess I agree about most of what you said.

Regarding localizations:

• Don't forget Xeno X.
• Atlus have announced Shin Megami Tensei - Devil Summoner: Soul Hackers.
• You forgot to mention Tales of Xillia in your list. It has been announced by Namco Bandai USA. They've also announced Project X Zone for 3DS.
• Aksys Games have announced Muramasa Rebirth for Vita and Hakouki: Warriors of the Shinsengumi for PSP.
• Xseed have announced Killer is Dead (not an RPG, I know) and Rune Factory 4 for 3DS, and they recently released Corpse Party: Book of Shadow for PSP (download only).
• Monkey Paw Games have announced Class of Heroes 2 for PSP (download only as of now).
• Lightning Returns: Final Fantasy XIII will obviously be released in NA/EU.

I think you can rely on Xseed, Aksys and NIS America to continue to support the "niche market".

Regarding your last paragraph, I totally understand what you're saying and I don't think we will see many "niche" RPGs on the system at all. The good thing, however, is that most of the RPG stuff that has been released for the 3DS (in both Japan and USA) hasn't really been niche. They've been major titles. Just look at what we've gotten so far:

• Fire Emblem: Awakening
• Kingdom Hearts: DDD
• Shin Megami Tensei: Devil Survivor Overclocked
• Tales of the Abyss
• Unchained Blades (download only, niche, not major )

In the future we'll have:

• SMT DS: Soul Hackers
• More Pokemon
• Project X Zone
• Persona 4
• Monster Hunter Tri G
• Monster Hunter 4
• Etrian Odyssey IV

To be fair, if you look at a list of RPG's released in Japan for the 3DS, you won't find much more than what I've listed above.

Other than that, I really, really want to see Bravely Default getting a localization.