You ask for so much... Is hard compare a mixed OO-procedural-command language to a any full OO language.

For example, how do thig like this? replace field with value for condition?

The only way is build a shared functions class, then hook in the command window (if is possible, or build one) then do something like:

ReplaceField("DB1","Field","Value","Field<>"+Value.toString())

???