I really hope they change eve. She's in a pretty weird place right now.
The only problem with her is the almost total uselessness around endgame.
HOWEVER! I have a very strong suspicion that with the new Jungle, she will get a natural buff to it all.
a. Invisibility becomes more important when others counterjungle and when you counterjungle
b. True damage elixirs benefit her ad/IAP style VASTLY
c. Dragon's +ap/+Ad bonus benefits her in case you go hybrid route
d. MUCH needed variety in early items that can also help her idle farm if you do not want to gank (but you should, see E)
e. You get a sweeping lens for free if you smite raptors.
I would always smite raptor AND the wolf so you wont get surprised in your own jungle and you can make sure to not be spotted by wards.
While these changes affect all, Eve already has built in mana regen. Mana is only an issue if you stick around in lanes killing non-neutrals anyway.
I am excited for her in the next season, with or without a potential rework.