I kind of hope you're trolling, but I feel compelled to respond anyway.
tl;dr: Nobody has been making any implied promises, and your suggestion had already been tried and failed before you posted it.
First of all, nobody is claiming to be working on super-duper secret projects. Everyone has been very clear that they are doing this for fun in their spare time. From what I have read, nobody is releasing much since there isn't much interesting to release. For what it's worth, there have already been results, in particular from Otto and Vasile. Both of them made no promises yet delivered exactly what they said they expected to do. Vasile claimed to have found how to increase the bitrate, and provided a video as proof. Yea he could theoretically have faked it, but I see know reason to think that at this point. Otto stated his intentions very clearly and his results have already proven useful to people who want to take videos of events longer than 30 minutes (as well as anyone who wants to investigate their camera further).
You got radio silence on your suggestions because people were already working on that and ran into problems that you did not address at all. In case it's too much trouble for you to actually read what people have already written, the issue was that if the camera app is killed it freezes the camera. It's hard to replace an app if you cannot even remove it. If you think you know how to prevent that, I would love to hear it. If you want "traction" in this discussion, try actually being helpful.
Regarding the DRIMeV SoC itself, I mostly agree with your educated guess. It is almost certainly the same die, and the ARM cores are 100% identical. Unfortunately that's not saying much at all since most modern ARMv7 cores are identical as far as the software is concerned. It's the details of other blocks that would determine whether or not the important components of the camera application run or not. I can't tell just from skimming the kernel source code.
It takes under 5 minutes to find and download the firmware update from Samsung's site. If you really don't have 5 free minutes in your life, I don't understand why you are wasting time criticizing people who have actually accomplished things and posted them here. If you are 1/2 as smart as you make yourself sound, it should take you less than an hour to unpack all the components of the firmware. I had never unpacked a firmware before, but it only took me two evenings to get all the major pieces out. The offsets, sizes, compression, and filesystems are almost all documented right here in this forum, so there is no excuse not to take a look if you really want to test an idea.
I totally agree that the ratio of people waiting with high expectations to the people working on it is rather high. The Magic Lantern forums are just like that on a larger scale, but that doesn't change what they have or have not done. You need to keep in mind that this forum is a community of filmmakers, not hackers (or even "photographers"). The point of this thread in the first place was to show interest in modifying a camera, at which I'd say it has admirably succeeded!
Finally, nobody cares that you're a busy person. So you like your HoloLens and want to play with it. Cool story. We're all busy people too, so suck it up and either contribute or go back to lurking. Sorry for the tone, but that's because I can never stand people who drop into discussions and claim that they could do it all better if they didn't have so many more important things to do, yet don't contribute anything useful.
/rant
I'm pretty sure the encoder is integrated into the main SoC. I can't imagine Samsung using a separate physical chip when the main one is already a custom SoC they made for their cameras.
If you are still missing those FW, you may thank archive.org:
1.01 http://downloadcenter.samsung.com/content/FM/201411/20141110100211100/NX1_FW_v1.01.zip
1.10 http://org.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx?CDSite=US&CttFileID=5889101&CDCttType=FM&ModelType=C&ModelName=EV-NX1ZZZBQBUS&VPath=FM/201412/20141220160910675/NX1_FW_v1.10.zip
Made a copy on my drive just in case.
As for my wishlist I would love to see recording time limit gone.
If you are still missing those FW, you may thank archive.org:
1.01 http://downloadcenter.samsung.com/content/FM/201411/20141110100211100/NX1_FW_v1.01.zip
1.10 http://org.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx?CDSite=US&CttFileID=5889101&CDCttType=FM&ModelType=C&ModelName=EV-NX1ZZZBQBUS&VPath=FM/201412/20141220160910675/NX1_FW_v1.10.zip
Made a copy on my drive just in case.
As for my wishlist I would love to see recording time limit gone.
If you are still missing those FW, you may thank archive.org:
1.01 http://downloadcenter.samsung.com/content/FM/201411/20141110100211100/NX1_FW_v1.01.zip
1.10 http://org.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx?CDSite=US&CttFileID=5889101&CDCttType=FM&ModelType=C&ModelName=EV-NX1ZZZBQBUS&VPath=FM/201412/20141220160910675/NX1_FW_v1.10.zip
Made a copy on my drive just in case.
As for my wishlist I would love to see recording time limit gone.