Volcanus - Unique Flamberge - Two-Handed Sword - Last Epoch Item Database) does a similar kind of thing to idea 1. If I recall correctly there are a few youtube videos of combining warpath with this sword & the paladins divine bolt. The visual effect is most definitely what you describe - should work but I am not sure on its viability as a high end-game build - maybe with some LP on the sword.
Ya im aware of Volcanus those are strait projectiles im looking for big curved waves to increase Warpaths clear it would also be nice to see some sort of movment speed while channeling with the weapon