Just a big shout out to Xhip. I tried the Limiter as a compressor, using a lower ratio, it's a little gem. The look ahead feature needs to be backed off when using slower attack times, otherwise latency is introduced to the sound source. From smashing drums to moderate compression, this thing handles everything, nicely.
Many hosts do support mapping MIDI CCs to parameters and it is always possible to load a plug-in to do the job. It does not make sense to add such features directly in the interest of keeping the plug-ins as simple as possible. Hosts should handle these tasks and may do so from any source, not just 7-bit MIDI but 14-bit and high precision OSC or other sources.