well, Paul Tanti (aka Earlyfirst) experienced the usual (commercial) SFP developer problem - not enough sales to make a living.
For some time he was CWA's tech support in the US, you might imagine what that means for spare time...
Anyway, his reverbs were (are still) excellent (I have one of his 2016s)
Aries, since you're making your own experiences with SDK currently, you may be interested in the fact that Paul did ALL his stuff with standard Scope atoms.
He once mentioned it himself when people suspected he used 'special tricks' or own DSP code.
Nevertheless there is a serious problem with the GUI handling in Paul's devices that might show up in your own work as well, once it evolves further.
While the parameter setup for the single reflections is certainly correct and precise, it's a pain to deal with a dozen or more knobs to change the room character.
There is a Princeton 2016 VSTi that solves this effectively with just 4 dials (if I remember right).
So my suggestion would be to find a way to avoid the 'multiple single event setup', for example by a hidden table, where the dial progresses through rows of (say) 12 precalculated value pairs.
Or use a graphic representation like a curve or whatever.
The 'standard' way would just end in people asking for more presets, as noone will want to spend the time setting things up correctly - at least I never did with Paul's 2016
cheers, Tom