Archer

[Viladin]

My suggestion for the aim ability is change "Starting at 1st level, as a standard action, the archer can..." to "Starting at 1st level, as part of an attack action action, the archer can..." minimal change and allows it to work with the vital strike and any other feat that requires an attack action (allowing greater use at later levels). In addition add a sentence denoting that the aim action does not change your initiative on subsequent rounds (unlike delayed/readied actions which change your initiative count).

I like!