I'm not too picky when trying to choose plots, so it's never taken me too many tries. I just don't want them on my paths or blocking half a bridge or whatever.
But the last two times I've done the villager plot reset trick, it hasn't worked. As in, my new character has seen NO new lot roped off, yet one's there later when the Mayor shows up.
I've got 2 towns. It first happened last week when I knew Fang was moving in. I did everything just like I always do, ran around with the new character (I always name him "Zoney") looking for plots, saw nothing ANYWHERE (and I've learned the hard way to look at every square of the ground) and thought, "Okay, Fang's not moving in today." So I went in with my Mayor. And did my usual running around town. Sometime in the late morning (in game time) I noticed that SUDDENLY there's a plot for Fang -- it's like it sprung up in the middle of a session, in the middle of a day! Fortunate the placement was OK.
But tonight I had Broccolo moving into my 2nd town, and went in to check where he'd be. Today's Thursday. Redd had been in that town all day. I TT'd to Friday morning @ 5:58 AM, as usual, ducked out, went in with my brand-new Zoney at like 6:02. Nothing was significantly different from the night before. No new plot... anywhere. I had watered 2 white carnations, hoping for a third -- but no new ones had appeared. Much weirder than that, Redd's tent was STILL in the plaza, after being there all day Thursday. I know Redd leaves before 6AM the next day!
So I didn't change the time, I quit without saving, and went in with my Mayor, so it was about 6:05 or so by then. Redd's tent was gone; I had a new white carnation; and there was Broccolo's lot, in a spot I couldn't POSSIBLY have missed seeing it.
I'm starting to wonder if one of the "Update Data" things I'd done recently didn't contain something from Nintendo that fixed the house-placement reset trick. I have TT'd a lot (in basically 3-day leaps, through August 2014) in my second town, so I can see it messing up if that happened to be a day I'd already TT'd to (I was farming a lot of perfect fruit, FAST). But I don't go that far ahead in my first town -- not more than a week, in small leaps.
Any thoughts, or weird observations from other people who do this a lot?