Couldn't agree more. And I've started to think that one of the reasons open JS grid and tree controls are so lackluster is that there is too much effort being spent on animations in general. The 'flip and fade in' display options are never useful, but being able to work effectively with high-dimensional, hierarchial data would be. Sencha is closest, but I still have to do a lot of low-level customization to work with dynamically defined columns.