>> - curve text, I don't understand why it's a solid ? I mean, 99% of the time I have to delete the solid to get the curve only :)

??? You can already choose between "Solids" "Surface" or "Curves" when creating your text...

>> - history !

It's there too. It's active by default for some functions and can be activated for some others by clicking the "History" button. Maybe I don't exactly understand what you're asking for. Can you give some examples ?

Can you also explain what you mean with "rebuild curve" ?