Re: So how is your dojo doing?
We've been doing the 2.5 x thing for about a year and a half. A few things happened at the same time, including a (wonderful) new student writing us a letter about how terribly we were handling new students. It was the best calling-you-on-your-bullshit letter I've ever read, neither defensive nor accusatory, but very very clear.
And it's not just one semapi per student--we have a few senior students who have taken it on at this point to make sure new students aren't abandoned and have some coaching on basic ukemi and so forth.