hmmm i can't give u hint yet, because i don't know ur squad depth, about Zedd, yes zedd not quite good except u don't have any other choices, i will not suggest u to waste ur gold for Zedd.
If you have talissa, that's without any doubt i will suggest to build & use it & have priority to build her as warlock
for ur freiya hera, don't build her yet, wait till valiant revamped up, except u don't have any frontliner at ur disposal, but at glance i see from above post, it seems u have many archer at ur disposal, if u have more than 2 archer, u don't need melee to be ur frontliner, just make range type of squad that consist of trigger archer or mystic, or mix it between 2.
Just my 2 cents
Freya is my first hero I build her to dragoon and set her with heirloom set.
this is my squad now: Faye hd athena, Ronan RM ares, Freya Dragoon hera, zedd warlock athena, Talissa Warlock Kratos, *4 Theia athena,*4 Talissa Herc, *4 Nadia herc, *3 Cybella athena, *3 Leon zeus. My first *4 Leon for fooder Ronan
there is no event so I focus to max heirloom set for freya
