Revenant is not broken, Octane is.
There has been a lot of discussion in the Apex community about revtane, including some good posts in this sub. However, it baffles me how most of the time, this discussion seems to devolve into Revenant hate while mostly ignoring the actual broken character and source of the revtane problem: Octane. Revenant is not broke, he is fine as is. In fact, I would even argue that the 5 seconds nerf to totem should be reversed. Octane, however, and the pad specifically are. No other ability gives players as much travel distance with the (relative) safety and the freedom that the pad does with such a low cooldown.
If Pathfinders puts up a zipline, you can hear it and if anyone takes the zip, you will hear it. Ziplines have an evident, predefined travel path. You know where it starts and where it ends. Players taking a zip, especially when pushing a team are very vulnerable, especially after the nerf to zip jumping. Pathfinder/Revenant? Not a problem, can be defended against and is not easy to abuse.
Wraith's portal gives you invulnerability when traveling through it but there is a single entry point and a single exit point. You can see a wraith placing a port and they are vulnerable when doing so. You know where players will appear and it can be naded/trapped/fenced/defended against. Even then, Wraith/Revenant was an issue (remember Crypto/Wraith/Rev?) and the interaction between Revenant's ult and Wraith's portal had to be addressed.
Loba's tactical has the same limitations: sound queues plus predictable travel path plus the character being vulnerable before and after throwing bracelet. In fact, I remember developers justifying these limitations around Loba's tactical and the nerfs to Path's tactical because in a game where being aware of enemy player positioning is so important, they did not want characters to silently be able to basically land on your head. And yet, Octane's pad allows you to do just that.
Octane's jump pad is completely broken. Insane travel distance, very low cooldown, no obvious sound cues when the pad is placed or taken and it allows players complete freedom on which direction to take pad in (unlike zip/port which has a single, predefined travel path). Plus once you take the pad you can then completely change your direction of travel/tap strafe, etc. Enemies can nade spam you while they jump to you. You can either try to shoot padding enemies which is not as easy as shooting a ziplining player for example but then you're at a disadvantage having to reload or switch weapons when the enemy players land on you. And that is only if they are pushing you directly. If an octane team is third partying you, you probably won't know or be able to defend until they are there.
Revenant is not broken. Using totem is risky. You need to place totem close enough to an enemy team so that the timer doesn't run out. You are probably exposed when pushing an enemy team from the totem. And if your push fails, you can be counter-pushed. Defending against a rev is easy too. You can retreat and wait for the timer to expire or you can fight against players with 75 hp. As a rev team, if you want more distance between your totem and the team you're pushing to prevent a counter push, you can use Path zip/Wraith port which is more straightforward to defend against as I argued previously. Rev's ult by itself does not give you a risk-free push, you still have to carefully consider your approach. However, paired with Octane's pad, none of this applies. By the time you SEE (because no sound cues) a revtane pushing, it's too late to retreat. If you try, the double jump will allow the pushing team to catch you. If you successfully defend the push, you can't counter push because there's no way to cover the insane pad travel distance before the revtane team resets. Octane's pad already allows for problematic pushes. Paired with a Revenant, it allows for risk-free, hard to defend against pushes and that should not be a thing in this game.
Revenant is not broken. Revenant is fine as is. Octane's pad is broken and needs to be addressed.