In a way, CC sequencing is already available, depending on the way your synth can use velocity. Most deep programming synths allow velocity to be remapped to most parameters and it's uncommon to not have velocity directly patched to filter freq as a standard modulation parameter even on basic synths lately.
Using velocity as a mod source can answer syrupcore's questions, just if it's done this way, you get either velocity or you get CC sequencing and never the 'twain shall meet! Not all synth respond to velocity, the MiniBrute for example, so it'd be nice to be able to send it a ModWh sequence instead.
The way it could be implemented is only through MCC really. The CC that is sent is set in Global settings to Expression, Vel, AT, Breath, ModWh, PBend, Foot or one of the 120 CC's. When not set to ModWh or PBend, the value is between 0 and 127. PBend is +/-127 and ModWh 0-255 but can be set to 0-127 for low res.
Although I've replied with a way to possibly achieve the request, I'd like to say, it's not a good thing to try being everything to everyone.....