As always when we discuss these things, some people like it/use it and some don't, it really depends on one's style and personal taste. Similar discussions have been had over the use of grips (I have one and never use it, I'd rather use the space in my camera bag for another lens), memory lock (I use manual) and so on. I mostly use the DoF scale because in those situations where I want precise control of DoF I'm usually using a tripod and taking my time over the shot. I sometimes use the DoF preview, and it is nice if it is available, but having learnt photography on an ME Super it isn't a deal breaker for me.
If you use it a lot, great, buy a camera with one. If you don't, then don't worry about it. With old film bodies largely being cheap these days (as we all know the CLA often costs more than the camera!), buy one of each!
To use an English colloquial expression, it isn't worth getting one's knickers in a twist about.
K.