[hota_mazi]

Thanks but... yuck. Any way I can remap these?

Cmd-<number> is a pretty standard way to jump to tabs (and arguably, Ctrl-tab as well).

[eridius]

⌃⇥ actually does work in Terminal.app. And in fact, ⌃⇥ and ⌃⇧⇥ are the official keyboard shortcuts in the menu, with ⌘{ and ⌘} being undocumented aliases. This is also how Safari works too.