Small quality of life buff for evelyn?

After playing evelyn pretty thoroughly i've experienced her weaknesses/strengths and whatnot and she's pretty cool thematically and stuff, probably my favorite assassin to play right now because of how she works.

(Bias aside) Looking at evelyns kit, she's a "get in there, murder someone, get the #%&$ out of there before you die" champ. Now her w facilitates this perfectly in terms of the massive movement speed buff and it having a 15 second cooldown at all ranks means you have to use it sparingly and at the perfect moments.

I'd like to suggest that during the speed boost from her w, she be immune to slows.

I mean it's a little strange that slows can affect her during the ability when the ability itsself cleanses, right? Also as an assassin with no mobility, her w is kinda the jam on her bread.

I can't really see this making eve op, just more reliable as an assassin/tanky initiator and with her limited set, I really think this would give evelyn a decent tool to take part in counterplay like other champions do.

Thanks for reading. c: