Honestly:
Bombed used to be useless. Ordnance used to suck. Rebels had a hard time in Wave9. Defenders used to suck. Ints were hot (after autothrusters). Scum was trashy + sIGs and 4TLT
Nowaday, Sabine bombs are supposedly too good. Ordnance IS too good on large ships. And Imps have a hard time Wave10-post nerfs. Defenders were too good,a nd got nerfed to good. Interceptors are trash. (= Now scum is mathematically too efficient by miles.
Let's agree to never go back to either of these metas. While I liked Aces PS9-11, I did thing it was starting to be stale. Turret-wing 2 ship Largeship + ace, 2 Turret large ship was utter cancer. NEVER ever go back to Wave 4-6. I like the viability of large turrets right now. Han, Dash and RAC lists now all have weaknesses.
The least cancerous dominance imo was still 4TLT. Beatable. OP. But beatable.