Correct. It doesn't make any sense to pit hardware manufacturers against each other with 5 phones of the same nature. I could understand different sized phones or different product lines.
Maybe a small phone by HTC at 3.5", a 4.7" LG phone, a 7" Asus tablet, a 10" Samsung tablet makes sense.
But you're not going to have 5x 4.7" phones by 5 manufacturers. That's just dumb. Way to fragment the development community that way too.
Right. This does make sense.
And to be fair to the logic that it doesn't make sense to have more than one phone, Google looks as though it's stepping up it's game when it comes to making sure the devices are manufactured without error (save for the first run of Nexus 7s). The Nexus 4 is an incredibly solid piece of hardware no matter how you slice it. The Nexus 7 is made to be comfortable to hold and use for an extended period of time (it is). The Nexus 10..... well, I don't know for that because I've not heard much about it to be honest.
Anyway, what I'm getting at is Google is designing quality hardware and working with OEMs to deliver a great, solid device. So we shouldn't really have to worry about who makes the next Nexus device. We can have our preferences, but I think every OEM shows they know how to make a solid phone (HTC with the One, Samsung with the Nexus 10 or any of their devices if you like plastic, Motorola with... everything they make, LG with a lot of their devices).
To add to your idea DLeRium, I think Google should try and introduce several devices from either one manufacturer or more but in different size ranges. Let's say they choose Motorola strictly. They could have them make a 3.7", 4.3", 5", and 5.5" device. Conversely, they could choose several manufacturers and have them make a special device. Samsung is good with large screens so they could make the 5.5" device, Motorola with the 4.3", etc...