Might be just me, but;;

How about a "credentials store" ??

If you look at for instance; WhatsUp gold/premium,etc,,
for a long time,, they given a possibility to save win, snmp, etc
credentials on the server and then simply refer to each choosen one.
This comes in handy when re-using credentials for different task
and/or machines.

Right now, with zen, Im getting the impression that I;
1. type in credentials while creating a discovery.
2. type in credentials AGAIN when doing a deploy...

This even though I've saved credentials on each occation.
Would be better If one could choose "a default" credenatial for
" win server - net xx.xx..x"

Or, at least, per device state that this credantial IS the right one,
even If Im creating a new task for it.