If I might give my opinion here for the record:
User fonts and custom sized peakmeters would be very much appreciated. Especially as the screen resolutions get higher and higher.
Being able to long press the record button on my H120 and go directly to the While Recording Screen from anywhere makes all of the sense in the world. The damn button is a RED DOT for the love of (insert deity of your choosing). Everywhere in the audio world a red dot means recording. Often times this needs to be done with as little fuss as possible. Has been committed!

I don't use the REP currently because I see it as being a bit "too much". I don't need a histogram nor do I need a graphic representation of the amount of disk and battery remaining. But I can see how they would be useful for some users.
I was a user of the REP a while back before certain features were committed to the main trunk.
My $0.02.

PS: I have no opinion about the Countdown and Repeat timer features as I have never used them.