At this point with my +2 Ares Dragoon Freya, she is strong enough to carry my team (auto) in Heroic difficulty for this current event. Oddly my +1 Kratos HD Victoria isn't truly contributing much...
All things considered, my next character to build is a Faye Paladin. But would you personally go for Kratos or Athena? Athena has more HP and MAG but lacks Def though... Kratos makes more sense since she's a tank but HP stat isn't exactly good - which defeats the purpose of her skills that scales with HP. (Unless Kratos is fine if I gear her up with all +HP stats) Or would potentially Herc with all +HP stat gear perform way better?
After that, I'll probably look into a Zeus Warlord Freya - not the best but Zeus is the next best thing after Ares.
Followed by a Hercules Blood Knight. (Actually, could you elaborate more on how Chaos Knight providing more in PvP if my play style fits?)
What do you think of my current plan?
Well, most, if not all, guardian jobs' role is a defensive type of play while Freya on the other hand, is a champion, whose natural play style is offensive.
According to a friend of mine, going for hercules on Faye is ideal if you wish her to be a pure tank as it provides both HP and MAG to not get nuked more often. Kratos is good, but its only benefit would be more damage and def compared to havinf a Hercules. Having Athena on her would be kinda puzzling, since even if it helps her survive on nukes more often, the sacrifice on other stats isn't worth it ,in my opinion.
Zeus is fine for now until you have free faith reroll units that could land you an Ares (during the early release of the game, mods took poll votes to see if changing the reroll function would be best for the community or not, so its still fine to hold on that Zeus Freya until the reroll revamp comes).
Chaos Knights play the swap style and can survive longer than Ninjas due to their natural tankiness. Also, their aura provides them more firepower that may be prove helpful in crucial times.
Your plan is fine really. Due to your units mostly being guardians, you may hit some walls that require you to deal huge damage while keeping your units alive (18-3 and 24-3 in legendary for example). You may want units that aide on your team in an offensive spectrum (even 4* MLB can prove themselves to be of aide) ; your freya dragoon cannot carry you all the time, so having more offensive units would be helpful.