I'm not a fan of changing rules purely because you don't like that they're combinations of other
USRs. If
USRs that combine other
USRs bug you, just split the
USR up into its various sub-rules. Note that this might interfere with rules that trigger off of that specific
USR.
If you feel that the Zealot rule is not well-designed, identify why and make adjustments based on that.
If you feel that a unit with the Zealot rule is not well represented/implemented, then identify why and make adjustments based on that.
Changing rules because you don't like how they're organized just creates room for additional balance issues to arise.