hey,
firstly, i'm no coder : )
i too got excited when i found these strings last year (there are hundreds), but now believe there are no additional usable commands/values available. i found that inside flashpointresistance.exe, all the familiar commands are together in a consecutive bunch, with rather different looking code and strings either side.
also, if lower level ai values/functions were available to the script engine, most of the existing commands would be totally redundant. to me it seems safe to assume that bis coded the script commands into the engine for a reason.