6.4.7 with Macro support is a piece of good news indeed.
From the “Limitations for Macros in Collabora Online” topic I have not understood - can macro (written in LibreOffice Basic, embedded into documents) for example export certain calc sheets in separate PDF files? I could try it out but there are no reasons to waste a time if this is not possible at the moment.
Additionally, even a very basic implementation of form controls like push buttons would be very helpful. For ordinary users, macros are much more convenient and intuitive to invoke with pushbuttons rather than a separate menu.
PS. “Save as” in Collabora CODE exports ALL sheets from ODF, with no option to select particular.