Ghost giving invisibility?

*Before you downvote, read the 2nd sentence of the 2nd paragraph to see it gives invis for 1s at the END of the ghost (basically a 7 second channel but you get speed while channeling). Now you may downvote.

So I was thinking...this summoner spell called ghost is ok but flash is always used because it guarantees you move outta a bad situation. I was also thinking about how new players always think ghost makes them invisible.

I thought ghost making you invisible entirely would be pretty busted. So instead you accelerate in speed for 4s, get to max speed (+15 - 22%) for 4s and then you are invisible for the last 1s (total 8s of speed). I didn't like the idea of ghost also being an ability to instantly get you out and I didn't want it to still be used over flash, but maybe some good old utility with some really hard timing.

Maybe Hecarim using it would get some good spooks and the 8s wait for invisibility means the moment an enemy sees you ghosting they're going to gtfo and have a long time to react, maybe a big animation before going invisible too (big ol' poof) so it's not unclear why they disappeared. Best use with champions like Fiddle, Veigar, Rammus, Hecarim, Singed, Talon?

This is a total shot in the dark pls no hate. This is one of those weird changes that would probably go on PBE, get hate from being completely busted then revert.