No, you can keep whatever works for you. If this matters for you, Motion Lighting is unlikely to receive any future development (in favor of Room Lighting), but even that shouldn't be a reason, as it will continue to function as-is.
Thanks. Though I was silly to have created 2 rules, it is nice to see that there are various ways to get the same thing done as different people come up with different ideas on how to solve a problem.