We need more enchanters like Nami
Edit: when I say more supports like Nami, I mean which skills you need to play her, not the actual kit. Like positioning and decision making are quite important to the success of playing Nami. More of that stuff, not her actual kit.
Here's my thought as to why Nami is the perfect example of an enchanter, and why we need more enchanter supports like Nami:
Q: the bubble thing. It's very hard to land, a good skill expression ability. It's especially difficult when laning against Kalista or hyper mobile champions. Because it's a small AoE ability, it's not like Janna Q or Sona Ult where it hits everything in its path. It's very rewarding to land, but leaves you vulnerable to everything if you miss.
W: Lots of skill expression here, too. While point and click, it's all about positioning and knowing who to hit. In team fights and trades, this is vital to the success of your team, whether you bounce to two enemies or two allies for more damage or heal, respectively. There's clear counter play, too. You can back off just slightly and the wave will stop bouncing. It's punishing to use on one person, as the mana cost is high. It needs to be used properly.
E: Decent ability. Not much here, but can be used as a speed booster when low on mana due to passive.
R: The wave travels super slow, so lots of ability to dodge. The wave also slows after knocking up enemies hit, which the slow scales with distance traveled. This can make it very rewarding to hit at max range and save an ally from a lane away almost. It's a game changing ability, which can win a team fight, with many uses, but mistiming it can be extremely punishing. It's not a "get out of jail" ability either, at close range when you get caught out it doesn't do too much, since the CC is not too strong at that distance.
Overall, I think we need more enchanter supports like Nami, where skill expression and counter play are very clear, and require practice to play effectively. To me, Nami is the prime example of a well designed support, where skill expression also very noticeable impacts gameplay. We need more supports like Nami.