I have been playing with Niks new Viveza2 as a plugin for Lightroom and am finding it really quite powerful and very quick to make adjustments that would otherwise take much longer in PS. This post isnt about Viveza2; but its worth noting that once you have finished editing a RAW file in LR and want to make further adjustments to the image Viveza2 is very powerful and convenient.
One of the things I really like is the ability selectively apply colour temperature adjustments to different parts of the image. Andy Biggs has a really good example of this on his blog at the moment. Its a very useful and powerful creative tool in this regard.
It struck me that the ability to do local color temp adjustments in LR should be a relatively easy addition to the current line up of local adjustments. And whilst the engineers are busy adding this feature it would also be nice to have individual colour control via local adjustments. Say, as an example, just being able to saturate the reds only in the selected local adjustment area. At present, if there is also another colour in the local adjustment selection it gets increased in saturation as well as the red - not necessarily what the photographer wants.