adjustable slope for modular smoother

[Cochise]

I wanna state in advance I'm sorry if what I'm looking for already exists, since I'm not so skillful and a bit lazy when doing search.


On some occasion the response curve of the Flexor Control Smoother doesn't suit the sound I'm up to, especially when operating in the frequency field.

Considering the diagram below showing the behaviour of such module, I should like to adjust the slope besides the transition time.
Even better having different settings capability for the ascending and the descending curves.

I can guess hard knees produced by linear or exponential responses are not smooth, however I'm wondering about different knee shapes or maybe kind of S type curves...