So this will be a collection post for those stories. Not sure yet if they'll all be canonical with Chronicle of Heresy, but they'll be related, at least. And since I really am working uphill on this, feel free to offer suggestions on how you'd like to see these Matoran represented.
-Bond of Heresy, focusing on Ahkmou
-Abyssal Obsession, focusing on Vhisola
-Cheatsheet, focusing on Vhisola
-Hint to Greatness, focusing on Ehrye
-Shattering the Mask, focusing on Nuhrii
-Opportunity for Ambition, focusing on Tehutti
-Jumping Off of a Perfectly Fine Gukko,focusing on Orkahm
Possibly more to come.