I think Ghost could use some changes

Hey, just wanted to pop in and talk about the summoner spell ghost. Right now, I feel as if it is not really worth picking over flash. Sometimes, it is good to take WITH flash as a double defense/mobility strategy but out side of that its not really taken. I feel like some champions really should want it but its just not worth taking over flash. For example, I feel as if many of the juggernauts (Garen, Nasus, Illaoi, Mordekaiser, and Trundle are all good example) are good candidates to want ghost, as it gives them the ability to stick on the carries and close distances over long periods of time, but due to slows/ghost being weak/losing a lot of defensive power from not taking flash, they can't really viable take ghost.

This is unfortunate and it makes ghost feel pretty unsatisfactory to take over in my opinion. SO, I think that it would be better if ghost gave you some distinct advantages over flash. I think tenacity on it, or just slow reduction similar to speed boots as that has seemed to be extremely useful as you could make sure you get the full power of the movement speed without getting slowed into oblivion and making it useless. Second, ghost should let you avoid unit collision also. I mean its even called GHOST like you are a GHOST. This would help you avoid creep block if you are running away in lane (and as a result let you juke through minion waves) and would be useful in team fights so that you wouldn't get stuck on mass champion piles while trying to run at carries/run away.

Who knows, maybe there are better ways but to me these seem like the best way to just update and tune up an old and underused summoner spell. What do you think?