It may be possible.
And that's because this year marks Good Smile Company's 10th anniversary, and as mentioned on Mikatan's blog, there's a suggestion box open so fans can tell the Good Smile crew which character you want to see
(as a Scale figure, Nendoroid, or figma): partner.goodsmile.info/sousenk…
The boxes go in this order: Series name (作品名), character name (キャラクター名) and product genre (ジャンル) (figma, Nendoroid, etc.).
Legally, they can't guarantee anything will be able to go on sale again or be made, but better to speak up, I say, than stay silent and let others speak for you. The polls and suggestion box will be open until the official celebration on May 1 at noon Japan Standard Time (11 p.m. April 30 Eastern).
So if you want figure of your favorite character in Kara no Kyoukai you can suggest it so that Good Smile Company knows that we want some merchandise from the series (they've only done some of Shiki, but even then it's not that many).
Also if people don't know how to type the names in Japanese when putting them the suggestions box, they can just copy the ones listed on the Wikipedia entry of Kara no Kyoukai if they don't know how to translate the series and character names into Japanese:en.wikipedia.org/wiki/Kara_no_…en.wikipedia.org/wiki/List_of_…
If you suggested then many many thanks from me and other Kara no Kyoukai fans Special thanks to for informing me about this (and giving rights to quote your text) \o/