How to increase Ctrl+tab cycle stack in Firefox

Is there a setting or code to increase the default Ctrl_Tab stack before "show all 386 tabs", (which do NOT show in order visited)? Only 5 tabs are available. (Note- if you close the 5 tabs listed in the FF switch tabs dialog, it shows the 5 previous to those. So it is "hardwired" to record, it seems, ALL previous tabs activation order.) FF ctrl+tab window

When you are looking around for a tab, the 5 gets used up very quickly, then you've lost your original tab!

Like Windows Alt+Tab which shows 35 then scrolls down through ALL open windows... win alt+tab window

Thanks!

(Also posted at https://support.mozilla.org/en-US/questions/1219054)

Workaround (not an answer. please don't mark down!):

Answered at https://support.mozilla.org/en-US/questions/1219054

Switch-to-previous-active-tab - Firefox addon. Button creates a clickable drop-down list of last 30 tabs in order visited, jumps to the tab (no previews but good functionality with options for current window and all windows, time visited etc.)

Switch-to-previous-active-tab screenshots