The engine issues on Sequoia. Then, the build quality (interior is really poorly assembled). IDK about Armada, but I know about Sequoia.
But let's put that on the side. What is the point of Sequoia? I got a year ago 2018 one, bcs. I could not see myself going with Sequoia 3rd generation, pay attention, after VW Atlas.
So, Toyota currently has three SUVs with solid axles in the back: 4Runner, LC, and Sequoia. Why? I mean I get that off road hardcore "bros" want solid axle, but how many of them will buy Sequoia? The 4Runner and the current LC are smaller and better for that purpose. 2nd generation is an independent axle, and while it might be an issue while rock crawling at Moab, it is far more capable off-road than most SUVs, especially any unibody SUV. So, the only conclusion I can derive is that they wanted to save money and thought people would buy it anyway (they don't).
Next is that battery/third row fiasco. Again, if they went to an independent axle, they could lower the floor and that battery. Seats sit on the battery, trunk is small (smaller than Atlas, far less usable than it looks).
And then resale value. I am not so sure about it due to engine issues and just the fact it does not sell. It looks fantastic, but they lost the audience that wants a capable BOF with a large family. That is why Tahoe/Expedition/Suburban are absolutely killing Toyota in that segment.
Armada IMO is what Sequoia should be. Good for Nissan. I hope they sell them and help them get on track.