I think there are versatile producers out there Chris McCormack has already been mentioned , The Youngsters and Laurent Garnier I think are extremely talented at making tunes as well.
The case for Chris McCormack and The Youngsters is , they don't play the decks , therefor they aren't writing their tunes with mixing in mind. They are just creating something they like and if that means it can be mixed then good , but first off it's a musical track that they expect people to listen to properly, not just mix in with another track. Their tracks stand on their own and can be listened to straight through without the need to mix something else in , there is always something more in their tracks.
Most of the people that produce , make their money by also playing sets on the decks and I think that this is the main reason for the Formulaicness that is very much apparent in Techno. Hard Techno in my opinion is the easiest to mix , cause most of it has been made by dj's for dj's and fits a certain mould. This doesn't mean it's bad , it just means that it has been made for a purpose , which is to keep people on the dancefloor.
What I am trying to say is that the DJ'ing has become more of a part of the scene than the prodcution (as in , this is where the real money is made) , so maybe that is in the back of each producers mind when they are making tracks. " Wait a minute that won't work , you can't mix that , shit i'll just take that out .....ahh now it mixes".
Whereas , if they didn't play the decks they would just go " that sounds ****ing cool".
I hope I am making sense cause I think I am starting to drivvel a bit. I ****IGN HATE TECHNO ANYWAY , IT'S FOR CUNTS