Agent are only allowed to use the old nano now
and with the lvl requirement thing agent wont even be able to use the new nanos even tho when Funcom decided they could
agent cant use alot nano already the adv form nanos (well @least make leet form cham usable) , the mp high lvl pet nanos , Ma crit nano , Engi warp nanos and shell pets - all those nano are the funniest and most useful nano in the class and they are even more useful then whatever already in most of that class. Agent dont change to these class anymore because of this reason soon agent will just stay as they are as more useful and more restrict on nano for each classes. Agent should be allow to use some of the more important one so they could use them more often but with a time penalty or something similar.
I am now a lvl 160 agent and i found it is become quite bored of the game b/c i have too many restriction unlike normal classes. And most of the agent would found that the most fun from an agent is the actual changing of the classes