I've never watched Western Country Pleasure, but I have to say, just the name conjures up an ugly image for me...I HATE watching Western Pleasure due to the horses moving like they are lame with their heads hanging and it seems to me it is getting worse, not better. Anyway, I have NO interest in a class like that for the minis, but Hunter Pleasure brings to mind nice, forward moving horses with long, ground covering, low strides. I personally LOVE Hunters.
sfmini, it may be different in your neck of the woods, but out here, Hunter Hack is a class that involves rail work as well as two jumps. Hunter Under Saddle would be the ridden equivalent to a Hunter Driving Class.
I don't know that I'm for or against this new class yet, but by all means, change the name--Carriage Driving it is not!