Ahh, sorry I never responded to your VM, got really busy with RL stuff. >.<
I'm really hoping Happy Home Designers turns out to be a decent game & worth the money. It's hard not to judge based on what we've seen but at the same time there must be more to it than that to be a full-priced game. O.O Rating other people's works would be an awesome touch! They could incorporate StreetPass into that as well.
They haven't announced the New 3DSXL model for NA yet - I'm hoping they will at E3! I'm assuming if they did, it would be the same design, but you never know!