Theres a couple of things I have disagree with the points u made. One is the reason why certain dragons kept alive for a time is because they were doing something for us, once their usefulness is up then they are put down. Cruel yes, but the blades dont see the dragons a equals they see them as enemys. cruel yes, the correct way of going about it, dunno depends on ur perspectives of the dragons. I see the blades almost like the tg, theyll work withe enemy until they no longer need them and will doublecross them all for sake of their ultimate gold..profit whereas the blades will work with dragons who will work back unt they are no longer useful and then kill them because thats the blades ultimate goal.
The other thing is I dont believe paar made a oath to the divines. One wiki states that the nine divines priests were the ones who told everyone that and after playing morrowind, the tribunaral priests have me wary on what to believe coming from priests that . Another wiki states that akatosh convinced and one says persauded and the one say akatosh told the dragons to teach us. All of those pretty much can also go along the path that either paar was convinced or persauded that the mortals weould be able to help out or when paa is told meaning that it was a command so then we can also be taken as paar was doing it out of compassion but as mortals as a means to fulfill their goal.
Another thing is the way of the voice is not a pacist ideal for dragons for dovahs are excempt from those rules. The way of the voice actually makes dragons stronger by them concentratong their whole being in mediating their thuums. It does not mean that dragons would be not atking for the way dosent have anythinh holding them back. Plus it also dosent mean that every dragon paar recruits is gonna be sitting on some obscure moumtain top for thousands of years, paar onlu did that because he knew he needes to be at that spot for the dragonborn when alduin comes back. So u could also say that by letting paar live and teach the way of the voice could be a bad thinh because it makes dragons sttonger meanong that they would be harder and more stronger to take down. The way
First of all, I'm unlikely to thrown my lot in with a group who's philosophy is "We allow you to exist as long as it is convenient for us to do so." That's kind of the Thalmor school of thought. Plus, is there any evidence that the Blades do this (I can't remember any, but it might exist). So if that's really how the Blades operate, I'm going to abandon them anyway and start my own organization anyway, so no need to help them.
Not really sure what your second point is, but it's clear that Paarthurnax obeys Akatosh, which is why he betrays Alduin. So until Akatosh says it's time for the world to end, I don't think he's going to do anything.
Third, I'm pretty sure Paarthurnax's interpretation of the Way of the Voice has it apply to dragons as well as mortals. The reason the Dragonborn is because as long as you follow the purpose given to you by Akatosh, you are living by the Way of the Voice.
If the Way of the Voice did not require pacifism and a need to go against their desire to dominate, why would Odahviing think the other dragons wouldn't want to follow it. If it just ensured them more power, I'd imagine they'd jump at the chance. But the power is obtained at the cost of deciding not to use it, which is why Odahviing has doubts about others willingness to follow it. He considers it "tyranny," because it's restrictive, not because it gives a dovah a power boost and free reign.