Sorry people, but I'm going to have to disagree with a lot of you on this forum about MVAM.
The main argument seems to be that the federation could just create three smaller ships (Nova, Sabre, Defiant etc...) to replace the Prometheus class for better results.
Does this really make sense?
Firstly, the intended role of the Prometheus class is 'Deep Space Tactical Assignments'. Is it really feasible for the federation to send three ships on deep space assignment? Think about this scenario for a moment. Starfleet creates 10 Prometheus class ships , that means you would need 30 replacement ships to swap out for the Prometheus class.
Forgetting that smaller ships should be easier to produce, as opposed to larger vessels (Intrepid class to Galaxy class), they still need to be fully crewed, and three would have to be made. Logistically it's a very bad idea.
This quote from ST:Insurrection points out that everyone in the Alpha Quadrant can smell the blood in the water, and knows that the federation is in a very weak position power & influence wise.
"Federation support, Federation procedures, Federation rules–" Ru'afo balks. "Look in the mirror, Admiral! The Federation is old. In the last twenty four months, it's been challenged by every major power in the quadrant – the Borg, the Cardassians, the Dominion – they all smell the scent of death on the Federation.
Starfleet is in no shape or form to be spreading itself thin, and that is perhaps one of the greatest arguments for the Prometheus class.
On another note, I think it's generally accepted that you don't send small vessels on deep space missions. Memory-alpha considers deep space missions as '
a term used to describe missions into uncharted areas of space.'Which essentially means that these ships operate outside of federation space. I'm of the mind that you either '
GO HARD, or
GO HOME' which is probably why you see more Galaxy, Nebula and Sovereign classes in deep space doing exploration, rather than Intrepid, Defiant and Nova classes.
Sorry for all the incoherent babble, but the last thing I wish to point out is that the USS Equinox & Voyager, are prime examples of why you don't send small ships in to deep space with no backup or support.