Wow I wonder if another game in the genre already had a solution for this problem a year and a half ago (ABI only lets the person who unlocked the door loot containers for the first 45 seconds)
I did them at 55 with my ssf and they were trivially easy, keep in mind they still only have 32k hps like Vox and Naggy. SSF progression doesn't start to get challenging until Velious and even then it's really just Dozekar.
I stand by all my negativity after that original demo but the full game really grew on me. The framework is just your traditional idle gameplay of build things to make bigger numbers so that you can unlock new things that make even bigger numbers but they paired it with Subnautica style...
Well Rallos is certainly a lot easier when you dispel his haste buff on engage. As for Zeb the guy who sorta pioneered the build said he was able to kill him consistently, I just never invested enough time into finishing the build to do it myself.