It would be SO VERY helpful - possibly a game changer; if FINARY had an integrated tool where one can run tax declaration scenarios integrating (tracked amounts allocated and to be allocated to investment or services sectors that allow a tax credit, such as: 1) work provided at home (CESU+), 1.1) childcare (under 3 years old vs. above); 2) philanthropic donations/start-ups contributions; 3) PRE contributions and whatever comes to your knowledgeable minds - what does the community think?
I am at the 30% marginal tax bracket in France (lower bottom) and it feels like a ball in chain attached to my neck for a family of 4. It would be a huge empowering feature, if Finary had a nice user-friendly tax optimization tool like I mentioned above (it would definitely make me renew my membership more easily 
as well as make many more people from my network interested in the app, btw, expats in Switzerland would totally dig it too!!)