Eh, I think it's a bit better compared to last season. It might be me getting better at supports, it might be my adcs getting better (I'm out of school now, was in school last season so I during the "school children" times compared to now, I play during the adult times), and it might just be the fact that I'm getting used to having to do a lot more than I should as a support and I do it.
I main Nami right now, have excellent scores in most of my games. Most of the popular ADCs right now combo REALLY well with her (Jhin, Graves, Lucian, etc.) because they love her E and they all can either kill the enemy from a single bubble being landed or can extend the cc till they die. Her kit is a bit meh, numbers aren't the best, but neither are Jannas.
Janna's only redeeming factor that makes her played is the fact that her shield gives damage. If riot removed the damage, theyd remove a huge part of her power, and make her a peel-bot only. A peel bot that can barely engage.
But yeah, it's probably just me getting better and playing with the adults, but I've noticed I have a bigger impact as champs like Nami, Janna, and Morgana than I did last season with them.