OK, have started a new game as Rome again, (countless restarts, always a good sign for a good game for me
I have the two world wonders in Rome plus a national wonder. For the first few turns the tooltip on the legacy points score only showed legacy from objectives.
It is now showing one legacy point per turn from unique structures and wonders.
But nothing has changed in my game, I still only have the original ones that Rome starts with.
Shouldn't I have been getting at least one per turn from the start?