Not sure why Lusty gets to be retained as a museum, other than being the last of the three sisters to leave service. Invincible (now scrapped) was class leader and the Falklands vet, Ark Royal (also scrapped) served in more conflicts and will probably be the last carrier to bear the RN’s most storied carrier name.
Heck, if any existing RN carrier deserves to be sitting in Portsmouth complementing Victory and Warrior as representative ships of their respective ages it’s Hermes.
The Indians have Hermes at the moment (INS Viraat). It is due to be decommissioned in 2017, it remains to be seen what will happen to her after that...