I think putting a couple of "big" programs inside a rom image would be helpful / useful thing to have. The programs I'm wondering about are...
1) Roger Hills 1300+ byte calendar printing program that won the contest between the TI-59 and the HP 41 to print a year as fast as possible. It's a huge program.
2) How about the best PI calculation program? It was huge too. It was in the PPC Calculator Journal V7N5P9 (June 1980).
I believe Bar Code are available for each. Be a nice thing to have in a .rom image someplace...
;-) ?