I was told I should do this as a bug report by Eagles in the “ask a dev” on Discord.
Some buffs are visable and displayed in a good way. Other buffs are not visable at all.
For instance I can’t see the Consentration (Marksman tree) buff anywhere. It would be nice to see when the buff is active/inactive. Same I think for item such as the one that summons water orbs? Atleast I couldn’t see the effect clearly when I played so I stopped using it rather quickly.
The buff you can see is Vaion’s Chariot and I can see when it goes on cd and how long it is.
More things like this for skills, items and passives please 
Thanks!