Ability to group the vst's in sections, like one for compressor, reverb and so on. Today with many vst it is sometimes difficult to find the one vst you are looking for.
It shouldn't be that hard.
If you assign a vst to an instrument, you can select that instrument, and press the edit button next to it (both in the general tab and instrument tab).
If you assign a vst to a channel, you can enable to show vst plugins. You can then click it to edit that plugin.
If you have a chain, press edit, then choose one of the menu's (can't remember the name right now) and select output->compressor.
It'll then open your compressor. Note that you don't need to close your plugins while tweaking the settings, and once you've tweaked the settings, you no longer should need to tweak them anyway.
Additionally, I use a chainer to group all my instruments/effects for one instrument, so I can click edit and get every plugin for that sound. That really works the best.