1. weapons can only be transmogged into weapons the class can wear. (so no fist->swords for shamans) (and isn’t that already the case??)
2. daggers are an exclusion for this and can only be transmogged into other daggers (for now, until they put more priority into animations so that that rule can be lifted as well)
3. OH-MH-1H restrictions are lifted (already being done as we speak) so that we can also use caster daggers.
Add to that the effort they have done for rogues until now (or at least the perception of it), and you cannot blame people for being sceptic.