Hmm, interesting. We go from whole starships to a rather important piece of their construction going forward. Let's hope that Mosi Sukuda gives us a little bit of help here, because we might need it with Yoyodyne being at the fore of the design process.
So, with both these designs comes some interesting choices. On the one hand, we can go with old reliable and ensure that there is one less potential point of failure and, as noted above by
@Fouredged Sword, we retain the classic TOS red domes.
On the other hand, even with the added mechanical and technical complexity, the higher warp ceiling presents some great potential for the field-focused injectors, not only in sprint times for rapid responses, but also in higher cruise speeds for longer legs in general.
At the moment, though I'm a little addled by sickness, I'm leaning towards the prototype roll here, pending any further argument.
Side note: It's a lovely TOS design display that Sayle's cooked up for us.