From: The Big Nowhere
Well, what I meant with the second device is not so much a replacement as it is a supplement -> this way the allied player doesn't have to worry about switching everything to the new model (with associated downtimes, especially if youre using Babes style AV support or service rating tweaks like I do); rather, the squadrons that arrive after the second one goes into production use that, while the earlier model continues to be produced and used as normal. Its not optimal and somewhat ugly, but it works.
With regards to factories, while it will probably repair itself by then, there are 2 ways around this;
1) HR the allied player only to switch them on when they become available (or say 3 months earlier, to get a little random in there).
2) Push the planes availability back, so that the factory will hopefully hit correct availability roughly on the intro date; this has the advantage that it makes plane introductions a little fuzzy for the allied side (could be a few months early, could be late, depending on how the factories repair). The downside is that as you say it will likely be full repaired by then (or rather it has to be if its going to move the R&D date), which means that there is no production ramp up.
A third option is to have a fixed build rate, and then monthly convoys to the east coast ("November '45 Aircraft") which would include increasing amounts of planes each month. The fun here is if the players are using +/-60 day variable reinforcements, these will not be necessarily in the right order or timed as planned. This could be a good or bad thing.
JuanG I'm curious, does the Allied player even get R&D? I thought there were on an unwavering fixed schedule.
Distant Worlds Fan
'When in doubt...attack!'