A marksman-style support would be interesting
What if there was a support that contributed to their team primarily by auto attacking and/or skillshotting ally champions? This would make auto-cancelling an important skill for this support.
Maybe 2 or 3 of their skills would imbue their auto attacks with different effects like healing or speed or shield/armor buff. This would give them interesting itemization like building attack speed to stack their buffs faster or damage that would scale their heals/shields/speedups more.
As a person that plays a lot of ranged champions I'd love to see a new support fulfill this niche so I can leverage the mechanics I already have and really get into a highly mechanical support when I play that role.
with font of life on all of them. Just keep healing.
?