There are some nice pistes in Courchevel once you get away from the motorway pistes around "1850" [marketing number not real height]. Take the cable car up from above above "1850" and that will give you access to the Grand and Petit couloirs. Above "1650" Suisses is a nice black. And there are some quiet reds in the bottom left corner.
I always thought ski resorts like to add area but Courchevel turned down a request from Pralognan en Vanoise to build a connection. It is only one normal length chair lift and a new piste to 1650. The fifth valley, actually no just more of the same. Currently the three and two bits valleys are Vanoise (Courchevel 1650), Bozel (Courchevel 1550, 1850, La Praz, La Tania), Valle de Allues (Brides Les Bains, Meribel, Motteret), Valle de Belleville (St Martin de Belleville, Les Menuiers, Val Thorens), and finally Orelle, So we already have five valleys Pralognan is a little further up one of the bits.
Courchevel just noted that 1650 is the quiet area of their domain so no merit in making the quiet area a little bigger. Pralognan saw great merit in a connection to one of the biggest ski areas, From 1650 the other area you can see is not Pralognan that is Champagny en Vanoise (part of Paradiski). It requires a lot more engineering than a couple of chair lifts to join Pralognan to Champagny. A rack railway? But together these two joins would connect Paradiski and the 3 Valleys. A huge ski area. Hundreds of skiers from VT and Les Arc in the wrong valley at the end of the day.
Now Pralognan at the centre of my fantasy lift system lets just drive a funicular tunnel through the Grand Casse and up the back side of the Grand Motte or Palet to Tignes. The three big ski areas of the Tarentaise unified, Sleepy Pralognan goes on a huge hotel building splurge at the centre of it all.