Hello.
First of all, thank you for making this simple working, yet awesome add-on.

The feature here is just a simple Milling/Prospecting/Disenchant result odds in the item tooltip.
Something like that:

Icethorn
Millable

Milled: 150
300% Azure Pigment (450)
66% Icy Pigment (100)

An add-on which does a similar action is: http://www.curse.com/addons/wow/prospect-me

If this request come to be developed, then Molinari would do all the things I am looking for.
Thanks in advance.

This is something I will never add in to Molinari, just because it's not meant to keep statistics.
There are other addons that will do this for you.