What I wish for:
- A hilly stage around Charleville-Mézières - it's easy to reach from Liège, it's already in France, and it's in the general direction of the course (clockwise in 2012 I suppose).
- Cobbles: Preferably some Flanders climbs (finish on Oude Kwaremont anyone?

), but another Roubaix stage like 2010 would be awesome too.
- In general, a first week with alternating flat stages and more demanding stages, like this year. It was a huge success (in regards to the racing).
- One or several medium mountain stages in the Vosges and/or Jura to shake things up.
- Alpes: One mountain-top finish and one descent finish (if that has to be Galibier-Briançon, please end the stage on that steep climb like they did in 2007), another medium mountain stage further south (Alpes-Maritimes) and/or Mont Ventoux.
- Pyrénées: Don't waste the big climbs. This year's Aubisque stage was interesting, but only in the breakaway - in terms of GC it was non-existing. A finish in Loudenvielle will work better; the Port de Balès is a good climb for a descent finish too. If they go to Spain, they could use some less-known Spanish climbs (mountain-top finish). And please make a stage in the Basque Country.
- ITTs: Prologue; long, demanding ITT between the big mountain ranges (à la Giro 2009); 30-35 km final ITT, but completely flat.
- Finally, some Breton ribinou (preferably with heavy wind, but that's not a course design question). After the mountains, on the day before the ITT. It could lead to some GC action, but even if the GC is as good as set (or the riders don't make it happen), it should make for good racing for the stage win.
I realise I probably won't get half of this, though.