The problem with mid lane and warding
I made a post previous to this one but realized it did not solve the necessary issue, therefore I propose a solution.
To give a general overview, mid has the most choke points compared to every other location on the map. This can be good or bad. The good news is you can escape if the enemy is coming in a different direction then where you're headed, the bad news is they can literally come in 6 different directions! A single ward simply does not cut it, the illuminated area is too small, while the ward can easily expire or get destroyed! Simply put, if you aren't playing a mobile champion, there's nothing you can do to stop a gank in mid lane. To add counter play, I propose wards should create an impassable barrier that can be destroyed by will also take time. This way, you won't always have to depend on the map or luck to stop a gank.