This does not answer your question, but I should perhaps make the "Alternative initiative" module read simpler in Reforged Power.
Perhaps:
- If you do not want to take your turn you can delay, but keep your drawn initiative.
- After anyone takes their turn (i.e. does not delay) those that previously delayed can choose to take their actions. If two wants to go at the same time, the one with higher initiative chooses order.
- When only delayed actions remain, all those that remain are forced to take their actions in opposite order, so last highest initiative has to go first.
(if used, it is important as a GM to also use this for NPCs. I.e. they will not spend their actions running up to PCs, rather delay, use the delay to run up and act first in the new round - avoiding the awkward "the first one to run in dies, so skip round is the best action" action)
This has pros/cons to just adding an overwatch action, but it solves a similar problem.
An overwatch is more important in modern game, where you can state that you threaten the target "to stop and give up" and as a delay state "if he goes for his gun, or moves I will shoot" (interrupting the initiative if the target does this, but makes you loose you action if they do not).
If you delay your action, you have more control and can better adapt, but are forced to watch the target perform all their actions, like "he draws his gun and shoots you", now it is your turn, oh, you are dead, too bad.
It is less likely that you stand with a bow fully drawn on a target in medieval times (simply because if you draw, you want to shoot, it is exhausting to hold it fully drawn), and that your opponent could draw his sword and attack you before you could strike them with your already drawn sword is also more plausible, as they could have just taken a step backwards or so while drawing their sword?
A final edit: Adding an overwatch action if a less intrusive change though, so I should perhaps just add such an action in Reforged Power instead. But an overwatch on the other hand dosn't solve the "the first one to run in dies, so skip round is the best action".. hmm. I still think overwatch fits better in modern games and delay in medieval games.