I think a Norns heavily emblemed will serve you well. With Odin, joon, Viv, sif and Gullinbursti you have a great mix of Holy heroes. Plus, you’ll be getting another Damascus blade at the end ot the month.
With that it can’t hurt to wait a week for Feb to see the final stats and get some feedback on the new HOTM. You’re roster is stacked but low darts and D Blades would cause me to pause. But with what you have, I wouldn’t regret ascending Norns. Seems I just made you think even more pal…lol.
I really like costumed Isarnia. The Mana boost from the costume bonus makes her special charge speed more manageable and thanks to the extra defense percentage down compared to Grimm, she’s a clear upgrade for titans and ice stacks over him. She’s the next best thing to Athena.