(Hi & Welcome to Midihub!)
dunno what Blokas have in mind, but pretty sure the much-anticipated Firmware Update With Scaleable Mappings will include at least this level of functionality.
In the meantime, if you want a fix and are willing to use a loopback (and able, in terms of available MIDI/USB ports…), you could simplify Giedrius’ elegant switching solution here then place it in a loop such that the CC that leaves the line presents itself as an external event ready for mapping.
(patch worth looking at anyway as a way of using Dispatcher as a simple state cycle!)
That would be enough for “On/Off on successive presses” and more.
Other loopback solutions can go a lot further.
If you decide to go down this route, @Hipstere, let me know via a Message/ Support topic and I’ll post the _LoopbackMapSetGenerator.mhp patch which makes it a breeze to set mappings from loopback.