cheaper, true, but in the long run, getting to T5 faster is the cheaper path, though the steepest climb. the rewards are
too good to pass up. If you’re still in T2, tier-hop right now. you’ll get more artifacts in T5/credits etc. in the long run, you will complete the game faster.
In fact, if you’re in T3, but think it’ll take too long to get to T5, get a small amount of gs, purchase as much synergy as you can,
and sell all of the T3/2 ships. have T4? sell them as you go. you’ll be in T5 within a heartbeat. once in, your grind rates will improve drastically.
just make sure to keep the modules, etc. so, with that in mind, you won’t be losing any progress in the tiers. you’ll be gaining a drastic increase.
I suggest focusing on 1 specific line. well, 2, but you have to choose 1. guard, or healer. as for which guard, either the T-Rex MK.II or the rank 13 Inquisitor.
in the healers, take your pick. but only choose 1. don’t go for all of the lines, or else you’ll be increasing the grind rate. one at a time.
2 steps forward, 1 step back, but you’ll enable yourself to take a 20 step jump the next turn.
in sector conquest, T5. I get 1.3M credits (depends on score) per loss/win. per artifact sold normally, (salvage yourself) depending on the type, around 23.