@XAXA_XADDYHitbox fix will be only for having a fair game, it's still lack competitive qualities. His silence still has it's own problems, it's covering a very small area while at the same time block everyone's sight (mostly revenant player themselves).
I was/am a big fan of revenant, but looking at his abilities for a competitive game, I believe it can never replace pathfidner, wraith, watson or gibby. Such champions have great mobility options to benefit both themselves and teammates or they can hold a large area and work perfectly as defensive.
Revenant can't hit and run like wraith or pathfinder, it can not offer any significant value that one can say okay, revenant is better than for example wraith for competitive play.
Yes, his balls (tactical) designed to counter gibby, path, wattson, but in reality, using balls and rushing is very risky and usually backfire in a serious match.
"Buffs" were actually fixes so make it playable, honestly I wouldn't call it a "buff". Gibby's buff in past seasons was actual "Buffs" that turn him from ashes to a great peak for competitive games with fast revive, fast heal, fortified, shield. That's why Revenant is B tier.
At the end of the day, instead of listening to what I'm saying, please just watch previous Global Series Games (at least just one of their matches, it was last week I guess) on youtube and then judge for yourself if Revenant has any place in any of those teams.