Make a mode (?) that allows LISTed programs (as they are now) to embed "forbidden" spaces in listing such that all the line#s align and text is wrapped offset from the edge. When moving the cursor around, or inserting/deleting in line, these spaces remain, and text is scrolled across these:

10 PRINT"HELLO":REM THIS
     IS A LONG LINE WRAPPED
^^^

(Currently not compiled, rejected - and thus interpreted SLOWLY)

This requires a change in paradigm for the DIRECT/PROGRAM mode internal implementation. But is well overdue.

As per this list:
https://www.c64-wiki.com/wiki/BASIC_keyword_abbreviation

Things like, gO for "goto", goS for "gosub", eN for "end". "?" is supported for "print", but that seems to be all!

Currently this requires re-RUNning the program
Perhaps do this by adding to the CLR and re-reading the DATA every time a line is added (or at least flagging that it should be done before the next READ is performed)

I/O ports
Joysticks

with same name

with anti-alias switched on, this could allow for smoother dot-by-dot plotting
switch on with ANTIALIAS 2 (sets extra render hints too)
and also calls to LINE, PSET, CIRCLE will then also flip to using draw(Shape .. double)
also (maybe) allow draw to have ANY number of points after it !?!?
Also, think about how to measure performance impact.

Currently it sets (and overwrites) the global variable

Allow (zero or many) extra class files to be compiled into C64 (or even run time loaded) to extend basic.
each module should add:

• KEYWORD
• number of parameters (and type?)
• Function (and code) that runs on each keyword
• Can (and will) use existing library
• this will be loaded into statements (define, call) and machine (code)
  For functions, same, but they will be
• loaded into evaluate AND petspeed

Needs 3 parts compiled, plus extra logic to keep the variable, and possibly changed/new Machine FOR functions

As per C128 implementation

programs are getting bigger

implement CHDIR PWD
also allow to switch between "drives" of:
LOCAL RELATIVE
LOCAL ABSOLUTE
LOCAL other drives (windows) and NETWORK
JAR
CLOUD
NET (alternative places)
Also allow DIR"%" or similar which lists directory without having to load into memory (and overwrite program)

Currently screen refreshed are throttle to 10Hz (with a 100ms delay).
It can be sped up to 100Hz (10ms delay) with a hotkey.
This should perhaps be more controllable/adaptable BUT
It should switch off updating within the screen scroll window (as it is pushing up or down all the text).

As per C128 implementation

allow :
DIR"%PHYS"
which will match all files with PHYS in the name
DIR"%%PHYS"
same, but in datetime order

Implement INPUT# completely
note, when reading may be partial line read

C64 only allows 1 parameter - but this would be a good extension - and allows doing PICO8 type translations.