So, Starred Tabs have been added, which is 1/2 of the capability I asked for a while back with "pinned tabs". We can remove tabs from Tab History either:
1 tab at a time.....100s of times per day for me
Older than x date - which does NOT work for me, because tabs that I want to keep around aren't always used every day

So, now that we can "Star" tabs, how about letting us clean up Tab History a little more cleanly. Such as:
1 tab at a time
Older than x, except Starred Tabs
Older than x

This allows me to Star a tab to keep it around without having to open them all every day just in order to be able to do a mass clean out by using the "tabs older than x" feature.