If you select a send track and play with a VST on it, the output is still routed directly to master. It would be nice if the output of the instrument was routed then to the selected send track. This would be quite handy for testing purposes.
For example, you wanna setup a renoise compressor on a send track. This simply currently is not possible while playing live, since the compressor has no popup and no way to route into send while selected…