OK! So, currently signed up we've got Pidge, Beth, Shiro, Nasu, and Lavellan. They're the go-team this time around, using one of the stealth ships from the Nest to make an approach without being detected. They'll find an unobtrusive spot to board and then use the information from the recce team to make their way to the vault and do their best to crack it while avoiding security measures; once they have whatever is in the vault, they'll bust out the recce team and make their getaway.

-Pidge has a personal stealth/cloaking thing from her symbiote power, as well as her hecking powers from God and the ability to deploy holographic decoys.
-Katie has her own symbiote power for stealth nonsense.
-Lucina is pretty good with a sword.
-Shiro's the getaway driver and has his weird robo-arm and his symbiote hulk power.
-Lavellan has HIS symbiote power, plus his weird elf magic. Notably he can phase through objects for about two seconds, so he might be able to open the vault from inside (if that's possible)
-Nasu has energy weapons and improved strength and the willingness to use all of the above.

Ideally, they'd like to sneak to the vault undetected via spoofing of the security systems, personal stealth devices, etc. Then go loud when they start busting the recce team out (and will stay in touch with them via the mental link throughout to see if they can provide a distraction at an opportune time, etc).

EDIT:

there is apparently a second rescue group that will be tagging along.