All I was saying was that if omegas are scarce while you're prepping for the event then choose where you apply them based on overall usefulness. If you intend to use Phoenix later etc etc. Doing 15% damage on Hera's attack or, on having a much faster Chopper reduce all cooldowns on an ally? I'll go with cooldowns.
Also forgot to mention Kanan's basic which essentially guarantees offence down if your team is hurting, regardless of tenacity.... Easily worth 5 omegas.
We're arguing personal preference, all he's asking for is advice. So we're offering two sides of the same coin.
Personal preference to not waste omegas on abilities that won't necessarily make or break the event, or are an exceptional waste of resources compared to others. I was providing examples of useful/high reward omegas to provide overall guidance on what to spend them on, even moving forward in the game with other toons. That is all.
It's generally accepted that if you have even decent mods, level 80, minimum G8, and uniques Omega'd you should clear the 7* Thrawn. Maybe not easily, but RNG should reward you over the course of the 7 event days.