I'm currently using opera gx with a lot of open tabs and various spaces and my navigator is taking 2.5GB of RAM. It would be very practical for me to have a tool that delete all data from the tabs I didn't use for more than one week but to keep them open in order to alleviate the navigator. Moreover it is not necessary to charge every tab when I am going in one space. Just charge them when i'm clicking on them to avoid more useless RAM usage.