You are aware that Queen hasn't met any Lunarian's but King...correct? I'm not sure why you're using Queen as a reliable source of information. Queen's opinion about Lunarian's comes from King. It's a sample size of 1.
There would be other Lunarians still alive if every Lunarian was as strong as King. It's really that simple.
Each of the m3 is definitely getting a mini flashback during their fights
Zoro now about shimotsuki and swords
Sanji probably pretty soon about his diable jambe and probably sora or judge
Luffy about his real dream how how hes a conqueror above all