5.9 inches sounds big to me but I am SO ready to go Nexus that it wouldn't be a dealbreaker. Tech Times (I know) claims it would be a 5.2-inch display with QHD (2560 x 1440) which would rock. Tech Times also claims that it will be called the Nexus X because the novelist Philip K. Dick owns the rights to Nexus 6. I thought they might call it the Nexus 5 like they reused the Nexus 7 name.
I might actually prefer a 32 bit SoC. Speculation is the 805 with a Adreno 420 which would be a pretty big jump from my S4. It seems the entire Android industry (except Intel) wasn't even close to ready for 64bit when Apple dropped it and so we will be looking at a full cycle (three years after the 5S) before there are really strong 64bit SoC options that don't feel like stopgaps. Exynos taught me to fear slapped together mobile tech.
One rumor I read is that it will come in 32GB and 64GB sizes. That is probably my biggest hope as I don't really want to go to a phone with less than 64GB. I know Google is anti-onboard memory (or external memory) but I hope the fact that Apple now tops out at 128GB get a 64GB Nexus option on the table and a 32GB floor.
For the Camera it is better just because the stock app in the last year finally stopped sucking. My only wish is OIS and just better low light performance than my S4 with a similar total pixel count. The Nexus's usually have a camera that is middle of the road at that time, and we are finally at a point middle of the road means a decent camera. I just hope Moto, if they do make it, doesn't screw that up. The New X camera is probably good enough for me (I would love OIS though).