My math was more off than I thought. Well, that's a bit of egg on my face.
So if we add extended, that plus nacelle placement comes out to
Worst (choose 1 parenthesis for nacelle placement)
Efficient Cruise: 5.4 (+0.2 - +0.4)
High Cruise: 6.0
Maximum Warp: 6.6 (+0.2 - +0.4)
Best (choose 1 parenthesis)
Efficient Cruise: 5.6 (+0.2 - +0.4)
High Cruise: 6.1
Maximum Warp: 6.8 (+0.2 - +0.4)
And both NP options will add +0.1 - +0.2 to High Cruise, since it's midpoint
Plus whatever the next choice provides, which if it follows the alternating choices we've done so far will be another Max Warp choice.
Not as good as I hoped, but good enough that I'll still vote for extended.
Plus, this bit here
But the addition of more warp coils allows for a more stable warp field and reduced load across the individual coils.
makes it sound like there might be a hidden durability/damage resistance mechanic involved, in the same vein as that 10-12 second spool up that a previous option had but wasn't explicitly included in the voting option
Id really like to pitch specialized nacelles to Starfleet. One that's meant for at-home hauling and one that's meant for military and exploratory purposes.
Honestly, yeah, this would be my preferred option too. Make this whole voting segment Type 3A for long hauls and do a 3B non-extended variant for sprints, if we don't just do another voting arc entirely.
I think one question we need to ask ourselves is what ships we are likely to build next, since they will be the ones using those new nacelles. We've already filled our utility niches due to 3 straight rounds of peacetime building so I feel we are going to need the emergency warp speed in the coming builds.
One thing we don't have which is going to be very relevant to our current situation is a bulk cargo/engineering ship; I could absolutely see us being requested to make one to facilitate colonization.