Why do you want a skilled up serket? I have the ALB cheese team and didn't see any need for this.
Skilling her up using a non-cheese team is a special kind of misery ...
She's got a unique active that will be inheritable once that update hits NA. Rukia teams can get some serious mileage out of it. Same with any rainbow team that doesn't need hearts as long as you have Heroine Navi. 6 turn cooldown shield that's as strong as you want has plenty of applications. I'm doing it because it's an excuse to run her as a lead.
I can farm with my alt but it's not as fast as I'd like. Kopis is actually really easy with Noctis. Just make a 3 combo 5 match dark and he drops most of the way. You can kill him with sub colors after that.
The only other dark card I'm really pushing to max skill is Mech Hera just so I have a 30% gravity to work with. The Yamamoto cheese team is pretty much foolproof, even moreso once you add fujin to the mix. It's a bit harder now that 4x is over though.
If you had Rukia I'd say go for the lead evo. You have some good prongers (Orochi, Famiel) for use as a lead but you'll be short SBR. So based on the rest of your box I'd go with the sub form. The orb enhances are useful on a lot of teams and 2 TPA is easier to level off damage than a 7combo awakening. If you plan on coop and can make up the SBR deficit with your teammate than I'd go with the lead version.I don't run a blue team on either of my accounts but can someone take a peak at my 2nd accts blue box and let me know which evo I should pick for my Nut, the leader or the sub?
https://www.padherder.com/user/LiQuitas2/monsters
I just want to get rid of some mats but don't have a preference either way