I'm a contributor to LibreOffice, but don't speak on behalf of the TDF. But IMO, I don't think LibreOffice devs would be at all happy with a rename to OpenOffice - that ship has long sailed and the history of obstructionism, poor quality in terms of builds, bad faith comments from leaders at AOO and an utter inability to maintain their own software has sullied their brand to the point it's in many ways a net liability to take on the OpenOffice name now.
LibreOffice has made literally thousands of code improvements and major refactoring is still ongoing. If anything the rate has gone up exponentially, to the point now where we are beginning to actually compete with Microsoft Office. We are already better at a number if things than the Microsoft product - we even produce more compact XML than what is generated by the latest version of Office. In fact, in terms of product direction you have a far better chance of influencing product features in LO and getting issues resolved than you'll ever have with Microsoft. Microsoft Connect is less than useless in so many ways, it's not terribly open and I've seen bug reports that are acknowledged and sat on for years - with LO, you can pay a reasonable amount of money to a third party to get the feature implemented or the bug fixed. You could never do this with Microsoft.
I think that the way Oracle went about things should be a lesson for any company or organization: Oracle cannot be trusted, and if they give you a code dump, if there is a competing fork then seriously consider whether they should be consulted and supported before you accept the "gift" from Oracle.