As you may have noticed in the LP a lot of Frigates and Cruisers have been built and are been used to great effect. There is a reason for this, the team felt that Sins had a unbalanced slant towards who can build the most capital ships. It was almost a case of who had the biggest and baddest levelled ships that could dish out the most damage.
This is no longer the case. Capital ships are now your support ships designed to make sure the fleet is kept up too strength and debuff the enemies. Yes they are slightly more powerful than cruisers as they are still battleships but they no longer win wars by themselves. The Galaxy for example debuffs enemy ships with a shield drain and can deal large amounts of damage with it's torpedo spread ability. Or the Phoenix variant which can send Engineering teams to help friendly ships. You need to keep these alive as around three cruisers can take out a cap ship with ease. Yeah around three cruisers are going to ruin your cap ships day. So it is vital that you keep them alive, the best way to look at is that as the ship gains more experience the crews better adapt the systems and make them more effective. They still get an increase in weapons fire and and health but not much.
This re-balancing allows your frigates to be a lot more useful late game and can give the loosing side a chance. By spamming an incredible amount of frigates you can possibly delay your annihilation, though just by relying on frigates will get you toasted by a mixed fleet of frigates and cruisers. The rebalance also gave us a tighter control on the overall balance for all the races too and as a result each race feels a lot more like the faction it should be.
So we hope that helps by clearing things up, some may want to have a ridiculous amount of caps but in Star Trek lore that didn't actually happen much at all. The mod is going to make you consider your fleet make-up so you need support ships as well as ships that deal damage. You need the workhorses even if they look butt ugly if you want survive. Any further questions just ask them in the comment section and we'll be right there with an answer.