Yeah, with Trek technology war would be pretty terrible and boring and come down to energy production.

In DS9 the Cardassians build automated weapon platforms and the Federation builds self replicating mines. At that point I find it hard to imagine that war wouldn’t just become a matter of industrial replicators churning out autonomous weapons and defensive systems as fast as possible. Your only need a few control ships in an area with subspace communication to manage massive fleets.

It also seems like Federation tech is pretty near the end game since they’re competitive in all the quadrants (I haven’t finished Voyager though, I can’t remember how they fare against Borg tech), so overwhelming enemies in quantity and energy reserves would be an acceptable strategy.