Sounds good... theoretically
Sure, one LDSF is by far more useful than 10 SDSFs with warp1 engines but that is not the point. Every good player will try to have as many good bases as possible. I mean bases that can build at least ANY useful ship with tech 10 drives. Freighters or bigger warships... doesn't matter. And of course it is better to have just two Novas/Rex/Darkwings/Vickies/Biocides/Diamonds/Gorbies/Golems/Rushs/Virgos instead of five or six medium ships (something around 4-8 beams and 4-6 bays or launchers).
That means while you have just two or three bases producing only good ships every turn you can still have many other bases producing any other ship every turn. That way the number of good ships of your race is more or less relative to the number of good ships of any other race. In the better case you have more ships and that just means you have a good reserve of PBPs.
Especially for weaker races this is a must but it is useful for all races. First you build a junk ship and that means your enemy can not build a descent battlecruiser. And then you play the queue. If you know how to do it you can build more ships than the usual way. And if you are in a really good position no other race can build a ship again (or only a few). You can always recycle a small freighter to get more than 20 PBPs and build whatever you want where you need it. That can decide the battle!
Sure, I won't put all my efforts in building bases to have as many ships as possible if the result is that one big ship can destroy my whole empire. I build as many GOOD bases as possible. But sometimes you get the chance to get a more or less free base (through selling supplies for example) elsewhere and then I will also build that one. You can still upgrade it when the shiplimit is reached and you can use it for repair tasks anytime. Cloaking races will also be scared if there is a base. A little LCC will take out every planet without base (no borg worlds of course) but the Lizard player will think twice if there is a base. He can never know if that base is a good one or not (if there are 10 SDSFs in orbit he should know it). And when you sell some more supplies you get 10 or 20 fighters more that might be enough to kill medium warships.
I mentioned it before - races with weaker ships often have tactical advantages (Lizards 150% damage, Bird cloaked intercept, pop, webmines) but sometimes it comes to brutal force. And then your only way to survive is having more PBPs than your enemy AND more bases building any ship.
Against big carriers the Lizard will have to sacrifice two Trex to win with the third one (or Mado). Sometimes or against certain races you are lucky enough to lose only one rex followed by a mado that can win. But if you lose two trex you just gave 10 pbps to your enemy. If you killed a virgo or rush you only got 7 pbps in return. Not good, eh? The queue is the key. If you have enough bases producing junk ships before the queue reaches the next base with a birgo/rush you should have three or four junk ships again. Then you have an equal number of pbps or even more.
And again... it is no goal to use junkships only. A Rebel can recycle a cheap sdsf and get a heavy phaser falcon in return. Pretty funny if you jump 10 falcons into a webminefield and then start to sweep for one turn and jump back home again. Sure... fuel intensive but the Crystal can do NOTHING. I just want to say that every junk producing base can become even more valuable later in the game.
Well, that's it. If two equal players are at war both will have an more or less equal number of bases producing the really good ships. And both will have some other bases that can produce no good ships. In that case the player who builds the junk ships will have the better cards to win. But a weak player will NEVER defeat a veteran player because he builds junk ships.
And hey... having a lousy cloaker at a base with 10 sdsfs is pretty funny. Just one kt fuel to every ship, mission cloak and pe "junkshipbuilder" and you get a very happy turn
Oderint dum metuant.
Bella gerant alii, tu, felix Austria, nube!