How bad are the “non-optimal” squadron classes?

[Omedon]

Hello, it’s me again: the “NPC dungeon party” obsessed recently returned player.

So I love my squadron, and I’ve taken a lot of really good advice as to party composition for command mission dungeons. My team for a DPS job is gladiator, arcanist for threat and emergency heals respectively, and my team for a healer is marauder and two rogues which is crazy damage. The thing is I’m likely going to be running tanks through soon, but it got me thinking that I have an archer and one extra squadron member that could use some leveling, and I was contemplating some variety. Yes I could change some classes around on my established folks but also… free levels while I level my own job!

So that brings me to my question: Every class I’ve mentioned above came recommended or had proved favorable by my own preferences. How bad are the remaining, unrepresented classes? Is the divide truly that pronounced or are lancer, pugilist and thaumaturge “ok enough” that it’s a mostly lateral move between them?