TI-84 has a Pic filetype which is just a black-and-white image of whatever is on the graph screen. So there's that.
I don't like when programs use StorPic without asking for user confirmation
You can't. TI-BASIC is garbage. You can only have single-letter variable names, for example. It is incredibly lacking in functionality and you'll find it difficult to convert much over. Not to mention it runs at a snail's pace. The TI-84+CSE has a color screen, meaning you can probably convert a bit more commands over to it, but that one runs even slower than the original.
If you actually want to make programs for the TI-83/84/CSE, then learn Z80 Assembly. It's the only way to write decently fast programs on those things, and it's not a very hard language to learn. If you made the program convert SmileBASIC to Z80 Assembly, now THAT would be useful.
Off topic : Um, to all those people out there with anime related pictures, most things you say aren't related to the topic at hand.
On topic : I think, you should try to do Ti-84 BASIC.