I would like to say, first of all, I am a pleased user of carlson survey
2004, although I miss some of the commands in core autocad, particularly
user coordinate systems and external reference drawings.
Many, if not most of us use a custom scale factor in our day to day
surveying activities, such as state plane. Practically all data
collectors support this ability. It would be nice to be able to input a
custom scale factor for a job so that all distance commands, such as
inversing, offseting, inputting deed descriptions and road alignments,
would be relative to this scale. None of the cadd programs that I have
used have this feature.
While my programming experience has been limited to simple basic and
lisp programs, it does not seem that it would be difficult to
incorporate this into carlson survey. I believe you could gain some new
clients, and a thousand "attaboys" from current users.