Swain feels same as old.
EDIT: atm anyway.
With the Grand nerf to swains healing from R he just feels like the old Swain with actually a best less predictable power on the damage front and control because of his previous nerfs (which were meant to be balanced around this new empowered and improved ult)
Can you at least make the ult healing scaling 0.2 Instead of the 0.11 it seems to be now? So late game, you can feel a lot better with your items, as his tankiness really falls off and becomes almost nothing ultra late game, and you can't really build full tank anymore.
This will keep his early and mid game the same, whilst giving him that extra push to be perfectly viable ultra late.