Bonsoir Bidouille.
I am sorry for your scepticism - especially towards a new member here like myself who had been trying to use OpenOffice for 3 years, but am frustrated once you get above some of the basics. (And I have over 40 years IT experience so it's not as if I am unable to adapt to new UIs , systems etc)
But to try and allay some of your scepticism, here is a quick list of some of the things that I wanted to add into Calc :
1. Ability to have SUBTOTAL ignore hidden rows, ie SUBTOTAL(100 + function number;<range>)
2. Remove duplicates from a list of values (ie <range>)
3. Support for Right-Justified cells with Indent.
And as I already mentioned, key in my list of frustrations (things that I didn't necessarily have the time or expertise to try and address) was the lack of support for XLSX, DOCX, PPTX etc formats.
I was also considering whether I could enhance both the Calc Function-Wizard to have some more specific validation of parameters (eg the input options for <function> in SUBTOTAL(<function>,<range>) for example.
I am not a great fan of the fact that for that specific function (SUBTOTAL), you really need to use the
Help button link to actually check the options - that's OK for people like me who are mainly familiar with the function numbers , but not for newbies who really don't know.
Speaking of the Calc Help, I would say that it looks like it needs a
serious upgrade / rework. It doesn't look like it has changed much in many, many, years.
And as I also said, I was actually starting down the road to contributing to some of these areas.... until I discovered that the development effort has slowed to a snail's pace since 2013 (based on a detailed analysis I did of the entire OpenOffice Bugzilla database... after that year fixed defects and enhancements have been under 100 almost every year except 2017.
As I said in my previous post, I have no axe to grind against individuals, nor any connection or history with whatever happened 10 years ago in the OpenOffice community.
But I do hope that at least you will see that there is no reason for you to be sceptical.
I am just one user (who happens to have >40 years IT experience) posting my own personal perspective, and I hope that it helps somebody.
Warren (Australia)