Seriously, dump the penny and the $1 and $2 bills. Find someone meaningful and likable for the $1 coin and while they're at it, find a red-golden alloy that doesn't tarnish for it (unlike the squawbucks which were too silvery to identify at a quick glance and they tarnished too much).
The Susan B. Anthonys were horribly indistinguishable from quarters.
I have no problems with the Sacagawea dollar, despite the lunatic rantings for or against political correctness. IMHO, it is a good-looking coin, somewhat reminiscent of the Buffalo nickel and Indian-head penny. I also find them very convenient to carry in my pocket with other change, and use them for small purchases or leaving tips. Whenever I'm at the bank, I try to remember to pick up a roll or two.