Irish Historical film

What story from Irish history do you feel really needs to be told on the big screen? I saw an announcement for a modern-day Cú Chulainn project by Ciaran Donnelly (creator of kin). And another announcement for a potential Grace O'Malley film by director Kirstin Sheridan. It just really made me think about possible film adaptions for other, lesser known Irish mythological sagas. I would be really interested to know if any of you have any pitch ideas that you would like to see.