The problem with this nerf is not because the Xoris was overpowered. In fact, that's not the case at all: It does not increase damage of abilities or powers, it simply just reduced the annoyance of putting away your exalted to hit an enemy again to return the combo effect, and going right back to it. If anything, one build that does increase the strength of warframe powers like DE states, would include weapons that are almost specifically chosen for this for their riven dispositions, the specific mods only they can use, and the strength behind that is absolutely enormous compared to the Xoris. Jaw Sword, Mire, Venka Prime, Amphis, perhaps the Dual Cleavers and multiple others can be used to such an extreme that they would far outpace whatever you could do with the Xoris, with one difference: You don't have to refresh your combo counter. That's all Xoris does. It doesn't amplify power strength or any other stat, it just simply allows you to stay in your exalted or powered up power for far longer without having to refresh it for 30 seconds. If that's enough to warrant a nerf, I would be very disappointed in what would be considered nerfable in other builds, as well.
The Xoris is not this supposed big, powerful weapon that breaks the game, if anything it opens up the more legitimate and less RNG-heavy route of taking. The game has been broken from the get-go: These builds have been around for decades, however only now have they not needed to use a riven. The rivens in particular that would say, improve Khora's power to the supposedly extreme level and popularity that the Xoris is claimed to have brought, are worth thousands in plat on the market. A Jaw Sword Riven with Critical Damage and Chance, with maybe Damage or Attack Speed, is enough to make Khora beyond lethal... And this lack of a need for a riven, when the Xoris itself is mediocre but still enough to get the job done when in reality it just makes these builds far easier to access without attempting the pay to win route, is enough to warrant a nerf...? This, unfortunately, would be a foolish approach. These builds will still continue to exist if the Xoris dies, the only change this will mean is that the Xoris is now almost completely useless for convenience, and people will once again return to their stat stick of choice to exploit the real Warframe power enhancing weapons to get the job done...especially when these builds are the only things that could dent something in the Steel Path. A shame, indeed.
If you want to fix an issue like this and limit just how far we can 'break' the game with builds that have already existed, then remove the ability for Rivens to power up those kinds of warframe abilities. That was not how they were intended to be used, and if they were, then why only limited to these 'stat sticks' which go for thousands if you get the right rolls? The problem the Xoris brings up is not it's fault, it's the fact that this build has been around for months with the requirement of a riven, and now that it doesn't need one it's getting nerfed? What kind of logic is that?
Please, please just stop with the 'no fun allowed' mentality and fix the issues at hand, not the weapon that exposes them for what they are. I understand why the Xoris would be getting a nerf, but this won't fix the issue. If it's because it's popular, then of course! People have made videos of this supposed miracle weapon, when in reality the real powertrippers are hiding in the shadows. People love the idea of a weapon with infinite melee combo duration because it opens up potential and growth in build variation that did not exist previously, because of how much an encumbrance running that build in particular was. Swapping to your melee out of an exalted weapon every 30 seconds to hit one guy and pop right back in? What's the point if it's so tedious?
I apologize if this was rude, but there's no reason for what the Xoris is getting because of a build in the shadows rising up again simply because it opened the flood gates. I'd rather you address the elephant in the room that is rivens boosting these abilities to capacities far greater then what the Xoris can currently do, instead.