If you can name me the NEXT "Nassi HaDor" of TODAY, we can discuss him being (or not) the NEXT "chezkat Moshiach", I don't mind. Can you, though?

The point is that all of those leaders were "inherited" (or whatever the correct word, "replaced" is also wrong) by the following generations leaders. Thus, they stopped being the "actual" leaders of the ongoing generation. Can you name me the person who did this to the Rebbe today? I doubt it.

Nah, dude, YOU said that "chezkat Moshiach" MUST make everyone of his generation frum SPECIFICALLY. DID Bar Kochba, though? Did he even WORK in that direction, as opposed to being a GREAT MILITARY LEADER (and THAT was WHY Rabbi Akiva thought so high of him)? Or are you now gonna weasel out of it by saying that "there weren't enough Jewish apikorsim in his generation"? Because THAT is, ya know, definitely a LIE. Or are you now questioning the decision of someone like Rabbi Akiva, eh? You see, being consistent in your opinion (and your excuses for it) IS a MUST. YOU said it is about "making everyone frum", so now YOU must show how this applied to Bar Kochba. Let's see.