I'm not sure why but going a support in a solo lane makes me feel special and powerful

I'm sure you guys have had this feeling before. You like Janna mid or some shit and have so much fun and feel like you're the most powerful person on the team. But it disappoints me that Riot tries a little too hard to force a support into a role. In my opinion it kind of makes them really linear. There must be someway to let them be able to go into another role without nerfing their damage into the ground. Here's a list of the support champions that were nerfed due to them going in a different lane.

Soraka Mid and Top (seriously 2 abilities she can't use on herself what the fuck)

Janna Mid (Season 3 R.I.P.)

Alistair Mid, Jungle and Top

Nami Mid (Patch Pi OP)

Lulu Mid and Top (._.)

These were really fun picks and were probably from when League was a better place. I mean, you didn't even have to nerf them too hard anyway. They naturally fall off late game too. And if their winrates ARE too high, couldn't you like do minor nerfs at a time until they got a stable winrate, just like you did with Sona? I know you're trying to force a meta Riot, but this is really something that needs to be addressed.