Not getting the new StreetPass games until I see how this relay system works for getting passes, I get passes but not nearly enough to justify the games especially when play coins are extremely limited. Plus all the passes i get are level 1 mii's which don't help much or sometimes do nothing at all. You can barely do anything with 10 play coins as well.
They really should have you earn play coins as you walk, I have walked 20,000 steps in one day and I still get the same amount of play coins I get by simply shaking my 3DS for a few min. If the point of the step counter was to encourage walking then this is not the way to do it, they could have the 10 coins for 1000 steps but then they could add more as you walk more, so if you walk say 500 more steps you get another coin.
Especially when the puzzle game just does nothing but essentially steal your coins, I can go days without getting any new pieces even if I spend all my 10 coins per day on that.