So, assuming that I still want to use Artemis and Raphael for sentimental reasons, Leilan or Kirin (assuming I get a good fire sub) are the gods of choice?
I have an Ancient Dark Dragon Caol-ila, Dark High Ninja Hanzo, Batman D/D, too, but the other two have gotten me through a lot and I'd like to keep using them.
You can't go wrong with any Chinese God tbh. They're all good. Sure, people might complain about Seiryuu, but that's only in comparision to the others which are really good. Her only problem is a lack of subs to play with, which I'm sure will be fixed in good time. I feel the same way about ulted Kamui.
If you really wanted to use Artemis, I would shoot for Genbu instead, all the other either need fire orbs, or don't have green as their main color.
I find mono-teams quite underrated tbh. Sure, you're not going to be 0-stoning descened dungeons, but for regular farming, they can still do quite a bit of damage while having a bit of tankiness to avoid getting 1-shot for minor screwups. Then there's the 4/0/4 setup which I find is quite viable.
I like using Blue for this, but you can do the same with Light. Lead with dual Raphaels, get a max-skilled heartmaker or two, hopefully Angelion, but CoC Healer or Siren can work too. Chuck in a gravity(Kirin, Zeus) if you can, but if you don't, you can make due with a Ripper Dragon, preferably an Ancient one. From there, find huge Light stat sticks and from there, you will have a team that will almost never die, though things will take a while.
For Artemis, I would reccomend using her in a 9x Balanced team.
Lead with dual Cu chulains
Artemis(ulted)
King Woodsie
2 mystery spots
They can be any of the following:
ADK(ulted)
Zeus dios
Robin
Fortdragon(ulted)
Those are just ideas, I'm sure I forgot some.