I put Dom on the left so that her dispel triggers first (if her & others special up at the same time). Can just as easily put Athena on the Left Flank & Dom on the Right Flank.
Regarding war defence, I wouldn’t be toooo concerned. War defences are like your normal defence… some days it does really really well & others it sucks monkey balls… For example, my war defence is normally around the 4.2-4.3k mark… Little while back, in one war I didn’t get OS’d once… they burnt like 8-10 flags for an average of 23 pts/flg… the very next war I got OS’d 3 times for 60 pts each… Some days you win, others you lose
Re Kingston, you can probably go either route. I would prefer him in the Flank role but have seen him work just as well in the Wings cause he’s got that fast mana.
RE Melendor, the 20th node is the mana one… so it depends on two things. 1) are you going to be using Melendor LONG term? b) do you have a better druid hero in the works? Based on what I can see of your roster, I would say the answers are Yes & No respectively. So I would give him the 20th node (can always reset using a token later on).
Finally RE Ares, yes people belittle him… But he can still be sneaky annoying, especially if coupled with a bunch of fast snipers… Like I’ve said elsewhere, theres no such thing as a perfect tank. Some have better track records than others but ultimately they all can and will be beaten.