I would like Clarification
First, Zilean and Tristana In patch 5.4 Zilean had his Q, Time Bomb, turned into a lobbed skillshot in order to remedy "his oppressive 'I'm-going-to-click-on-you' laning strength" (Patch 5.4 Notes). Now that's all fine and good however in patch 5.2 Tristana received a gameplay update in which her E active was essentially made an AD Time Bomb that although having a lower range would deal significantly more damage if she stacked it up (A total of 120). Now my question is why is Tristana allowed to have this as it gives her the "oppressive 'I'm-going-to-click-on-you' laning strength" (Patch 5.4 Notes).
Second, Viegar, Vi and Annie In patch 5.4 Viegar had a delay added to his E, Event Horizon, because "Veigar left opponents with less and less options" (Patch 5.4). Now whether this nerf is justifiable or not is 'debatable'. But as a brief aside before my main point in patch 4.19 when discussing the Zilean nerfs it was said "we typically don't like nerfing champions when they're down" (Patch 4.19 Notes). Now Viegar wasn't popular before his changes and certainly down after the lost of DFG. Not too mention the current popular junglers (Jarvin IV, Rek'sai, Vi and Lee Sin) will have no problem getting around a 0.5 delay (This isn't accounting for the cast time) as they have gap closers and CC.
Now on to Annie and Vi and how they fit into this. Annie and Vi both have reliable burst who can both one shot a frail target (Assuming Vi built a second damage item). In Annie's case she has reliable ways of locking down enemies with Pyromania and Disintegrate (A point and click stun) and large amounts of instantaneous damage. Vi also has reliable ways of licking down an enemy with Assault Battery (A point and click knockup) and reliable damage to follow (Enough to combo an ADC or Mage). So if Vi and Annie can both have instantaneous burst and point and click CC why can't Viegar?
Third, Revive Why was revive removed? There was no justification in the patch notes, just that it was removed.
EDIT: Thank you all for the clarification.