Data entry shortcuts and unit overrides in the traverse tool are great. For those of us who deal with old PLSS deeds, we frequently have situations where a single deed will make use of both chains and feet.
Right now, I can enter values like 25mi or 13.2yd into the traverse tool and it will draw the line accordingly. This may be more of a regional issue, but I've never had a traverse where the available unit overrides were actually useful to me, except a single deed written in meters. But if I could write 2.75ch and get chains... Well, it'd make me happy, though my calculator would get lonely.