Feel free to build crux with only banner, scholarship and Ulfisid, and cut knife to fit Whirling blades in.
It is aimed to be an universal setup so I wouldn't do Tideborn/Maelstrom 2H here as it doesnt boost your ult, but ultimately the best would be to have an Acuity setup for when you plan on ulting and using Tideborn/2H otherwise.
Deadly is ultimately better than Tideborn, but I assume in most groups, you aren't getting a good pen number in trash.
Feel free to use Proxy instead of Ulfisid but I feel like Ulfisid is better and easier to play. I usually run Lingering torment on Ulfisid but I tried Class mastery recently and it felt really nice in slow groups, so I think I will keep it like this.
Be aware that beam is capped to 6 targets now, so you might want to use Whirling blades only in some packs. If the Banner nerf goes through next patch, I would just spam Whirling blades and use Tentacular dread with 1 crux.