I'll use this second post to fill in any partial or full answers I manage to figure out myself, still appreciate any input though
1. /aseval "expression"
seems to fit the bill for running actionscript in game and getting back chat output.
Edit: Dead end. Seems
/aseval has been broken by Funcom for a while.
Reference:
http://forums.thesecretworld.com/showthread.php?t=76869