OK, I admit it, I found a copy of Safari v62 and have been using it for the past day. It crashed twice and since it’s not technically supported I can’t really send the crash logs anywhere. Tabs are cool. Prior to Safari’s emergence I was using Chimera.
The other setting that Safari needs, IMHO, to make tabs truly effective is a pref to open requests from other applications in a new tab vs. a new window. Chimera has a pref for this and it’s very necessary. Otherwise when browsing from your favorite RSS aggregator, like NetNewsWire, all the selections are in new windows anyway.
I don’t think anyone has figured out the forms auto-fill yet.