I like setting the width to 2 tiles, so you have to do some tricks with swapping so that only the square piece will spawn, since the others won't actually fit.
Yeah, that's the version I based it on. (I have the virtual console version, which isn't on the eShop any more, I think)
I did try switching to SRS at one point, but I didn't like the rotation very much, especially on the S and Z pieces. I did add simple wall kicks though.
There was a weird implementation of holding in an earlier version (it would swap current/next piece in place) but I removed it
If they would just spend 5 minutes replacing Miiverse with an actual way to take screenshots...
Oh well, I guess we'll have to live with a broken icon on the home menu for all eternity.