Forscher, I think you are probably closest to the truth. The leadership has become a faceless beauracracy in the communist fashion simply intent on minimising dissent and maintaining status quo. It's totally calcified and stagnating like you say.
I don't envision any changes re 1914 at all because it will have to mean the re-writing of truckloads of related prophecy. The JW's will just end up like the 7th day adventists but with 1914 instead of 1843.
Same with the blood doctrine...I can't see them changing that either.
The only changes I can see is minor tinkering at the superficial level, perhaps shifting the bookstudy to a Saturday morning before field service or something like that. Not new light, just enough to keep the borg imagining that the organisation is progressive.