You should remember that we only vote on builds one year at a time, though. Like for instance, there won't actually be a Centaur-A in my proposed 2312 build schedule even though you can see it on the sheet, because it wouldn't happen until 2313. And it would only be then that people could vote between that or an Oberth or whatever.
While true, the fact that next year's build will influence builds in the years after that indicates that we must take a multi-year approach when voting for a plan.
I'll try to come up with some alternate plans that fit...
Or, you know, we can do new design that will have similar or better stat on the same crew and wouldn't obsolete as soon (and which in turn can be refittet if needed long after current ones will be obsolete).
You're missing the point. New builds, regardless of how crew efficient they are,
will cost crew. Refits, at least all the ones we know about,
do NOT cost any crew. So to save crew while filling up berth space, refits are
the best solution for this.
Every refit that's scheduled helps delay our crew crunch for the amount of time it spends in the berth.
Relying on the Renaissance past our next two non-Ambassador designs is kind of what I'm recommending we don't do. I mean, it's not a bad ship, but into 2325 prototyping I feel we should start designing to what Starfleet actually does, rather than having a ship that responds at 8 but can resolve at 3.
I don't disagree that the Renaissance is not optimal when coupled with the Oberth. But if we can get a science ship which science event response would beat the Renaissance, and then let the Renaissance backstop Excelsiors on presence events, I think that would be workable.
Renaissance would respond to science events at +8 while resolving at +3, so we need a science ship that at least beats that +8 (so at least S7 D2). Meanwhile, Renaissance would respond to presence events at +9 while resolving at +4, and for the supposedly less common presence events, that may be fine. Plus whatever ships we have are going to be serving as backup to Excelsiors and Ambassadors.
The replacement to the Renaissance or next cruiser build could follow the same principle of being decent at presence and mediocre at science, as long as the contemporary science ship of the time will tend to beat it at science event response.
This definitely isn't the only approach we could take. I think all the following are viable but have different pro and con landscapes:
1) Cruiser that's good at combat, decent at presence, and mediocre at science (like Renaissance), coupled with science ships
2) Generalist cruiser (decent at all but excels at none), coupled with science ships and perhaps compensate loss of combat with more combat/generalist escorts
3) Cruiser that's mediocre at combat and good at presence and science, coupled with a cruiser that's good at combat (edit: although to avoid event response, this ship would have to have low defense, which also hurts its garrison abilities)
4) Cruiser that's mediocre at combat and good at presence and science, coupled with heavier emphasis on combat/generalist escorts
and others...