Does this make sense? Or am I missing something crucially important?
It makes sense, but it's largely implemented already in 1 key area: range.
Skillshots have roughly twice the range of point-click to keep them incredibly even in terms of power. For most practical purposes, skillshots are even in power with point-click, if not better in several cases.
This also gives more room to maneuver around champions reliant on point-click, and gives plenty of room if you're using skill-shots.
The only advantage point-click skills really have currently is assaulting specific targets in the middle of large, multi-target environments (minion cover or team fights). Which you also generally need to enable a few settings to take full advantage of.
If you actually out-range you opponent (Kayle or Ryze vs. a fighter), that's the only situation it becomes that oppressive.
Also - skillshots that keep going after hitting a specific target can still deal with such situations, so point-click isn't 100% better.
Skillshots have a noteworthy edge though to: they don't require sight of a target to be fired, so targets hiding in fog of war, brush, or stealth can still get hit - and you can scout for such targets with skillshots due to this as well.
They both have pluses and minuses in a few other areas. Skillshots have an edge in being chased as you can count on the missile speed and your opponent moving towards you to greatly extend the comperable point-click range you can fire things off behind you, where the inverse is true for chasing (though skillshot's double-range ususally keeps chasing fairly even).
Point-click being incapable of fireing off against targets that are untargetable or mid-Zhonya's also has a few advantages, though you can still dodge point-click on the initial activation of such skills during their wind up time. Not requring a target gives skillshots an edge when such effects are ending, allowing the buisness end of a skill to happen emediatly after such effects end with proper timing, rather than just starting your animation when they're acceptable targets with point-click.
I'd also like to mention mobility vs skillshots as some people are bringing up point-click as a counter to mobility.
Point click isn't a counter to mobility. While mobility helps evade skillshots, mobility usually happens in the ~600 range point-click dynamics opperate in, which means getting close enough to point-click is close enough for a mobile champion to sit on your face (or easily hop away), where skillshots frequently work more in the ~1000 zone: allowing you to take pot-shots at mobile champions from a safe place with no fear of a counter-attack.
Finally - if you're looking at where point-click can become skillshots, Vayne's Condemn is a decent representation of a point-click skill that's still a skillshot. Poppy's Heroic Charge is another example of how point-click can still offer a lot of wiggle room on the opposition's side in dealing with such skills.
