At this point, if I were to vote for new features....

[webmasterpdx]

...it'd be 2 things. A way to define macros (maybe remove the define functions and make it a macro instead). I've heard the argument for the define functions (a simpler way to program for beginners)....well, the macros will work just as well for them, and will provide more advanced programmers with a valuable capability. The second would be to be able to pass arguments by reference. Apart from being able to get arguments changed, it'll greatly speed up the passing of matrices or grobs which are currently passed by value.
Both of these features will not require any changes to hardware.
In most cases, as far as users are concerned, the define should return the same results as before, so the change would be unnoticable, and programs that call them should run faster.

Thx
-D