Please make it so we can indicate up to the second decimal place for macro /wait times.
From a technological standpoint, this is possible to implement. Actually, up until midway through the Beta Test, it was possible to indicate up to the first decimal place. However, for the initial phases of FFXIV: ARR's operation, we decided to lower the degree of accuracy on this.
The reason being that there was a concern that the convenience would exceed the purpose of the macro feature.
Here is the macro feature policy for FFXIV:
Do not make it so macros must be used.
Minimizing and optimizing actions without error beyond that of human control is not allowed.
Make it a support feature that can be used by people that are a bit shaky at controlling the game to ensure control, while not making it 100% optimized.
The player makes the execution decision. We will not be implementing a feature where the macros makes its own decisions. For example: We will not be implementing a feature that executes things based on certain criteria (player status, enemy HP, certain actions, etc.)
Due to the above reasoning, we limited the degree of accuracy for the wait times.
Of course, there are games where the policies outlined above differ*, but we felt that this policy is the best for the current XIV.
Naturally this doesn't mean that we keep it the way it is forever. We'll continue to make adjustments as we keep an eye on the situations happening in PvP and large-scale instanced raids, so please just keep the above policy in mind when offering feedback and making requests.
*For example, we won't be having a gambit system like what was in FINAL FANTASY XII. The aims between the automated strategy system for XII and the control support macro feature of XIV are totally different.