“everything’s free for 10s” is the standout. I got 5 Sovereign BCs for free b/c of that 8)
CtG hosted a CO Tier list for #451/Violent Night and mentioned as Stukov, mass making CCs when they’re free, then cancelling them to earn 300 minerals apiece!
Archangel appears to be popular? It’s a decent tank and source of AA. Esp. for a mission like VL where the objective is air only.
MULE party is nice if your CO appreciates it (cough Stukov P3). Likewise, Vespene Rain for COs or builds otherwise bottlenecked by gas.
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Chrono Surge appears to be the +200% version of what Karax has, as opposed to when a talent level boosts it to the VERY noticeably faster +500%, so even though I try to get ready for this… it’s not as great as I thought it’d be
The free Herc/Queen/Scout is nice where Hercs are only available via Tychu’s Cannanball (and even then, it’s a “super hero” outlaw unit, not the base template), but I couldn’t really find any true purpose for it other than cannon fodder and novelty.
People love free stuff. So its no surprise that everythings free and archangel are two of the most popular. However I also love avenger if you get it on the right unit. I once got it on dehaka once and that was so much fun. Get it on a hero unit and you’ve struct gold.