The 6P is fine as it is.
The main hurdle it has is the same hurdle all non Samsung phones had last year aka the Snap 810.
Put the 820 in the 6P as currently and it's auto buy again.
So it can't be shit for a 3rd year in a row. Not that I thought the two years before last were shit either .
6P is fine if you already own it. The price makes it hard to recommend any phone with a Snap 810 though purely due to thermal issues.
First of all, I definitely made a broad statement based on my weird personal opinion that barely anyone shares.
But the thermal and throttling issues already make the 6P a non-recommendation, unless you can get it for a really good price. Even when the phone came out, I wasn't sure if it was worth the price they were asking for, simply due to the SoC and how it's going to age.
And then there's what Pyro already mentioned, the size of both devices. I really wouldn't mind the 6P as it is (options are great!), if the 5X hadn't been so disappointing for me. I'm not going to list my issues again, because I don't want to sound like a broken record, but it's definitely not a good follow-up to the 2013 Nexus 5. At all.
I don't know, I might remember things wrong, but I feel like 6-8 months after launch, you could still recommend the Nexus phones to people, if that's what they were looking for. Even the Moto Nexus 6 was still a good recommendation in June 2015, if people were okay with the size (which I wasn't).
That's why I think the previous two Nexus generations have been a shit. The Moto Nexus 6 in 2014 was just massive, with an average screen (at best), and both phones last year were a big no-no for various reasons (mainly size and SoC for both).
I suppose it's time for me to let go of things I really want in a phone, accept that I'm not getting them and be more open-minded to other options. No more wireless charging or no 5" phone or no more Google "Stock" Android and no more timely OS updates.