That would be a really weird thing for them to do and would pretty much destroy any notion that they were operating in good faith. I would expect them to just give up writing before pulling crap like that.
But note the contrast with "risky invasion mission". Being kept at home means more that they wouldn't be sent into the same level of danger as rank-and-file ninja - at least not without a trusted jōnin team leader to manage risks and make sure they learn as much as possible from the experience. "Is there a tangible risk that they will die on this mission? If yes, don't send them unless you can send appropriate levels of firepower with them."
Pfft. What use could the Sage possibly have for somebody who can wipe other people's memories but does not herself have Yamanaka-tier mental defences?
Well, Keiko could do with a medium-range weapon to cover for her weakness in melee (I think chain weapons still function under the Weapons skill?). Maybe the kusarigama she got way back when, or use ninja wire in combat. Or something.
If/when Kagome gets around to making impulse seals we could use ninja wire in combination with them for some hilarious antics.
ooh, how about an explosive yo-yo? That would be hilarious.
Jiraiya probably did, Nakamura was ordered to retreat during the Akatsuki attack.
Yes. That's why I want her to use it. That mental image is hilarious
Speaking of Akatsuki, anyone else want to get Noburi Samehada?
Something something secondary Weapons skill.
