Well, I am going to agree with you is that Tsukune looks more vampire like then before, the rest of the things you mentioned - especially about Tsukune becoming a "pure vampire" will have to wait, until we are provided with more details about his current form, and honestly speaking I believe that Akua is going to be the one who will reveal some more details about Tsukune's current and final form, as well as being the primary "test subject" of his new powers.
As for Tsukune awakening Alucard in this form, well honestly speaking I'm wondering about this as well, but if I have to put my own opinion, I doubt that's going to happen - the reason being that, even if Tsukune's powers have been finally stabilized, and I doubt that we will see him in his berserk form, it remains a fact that Tsukune is still a novice when it comes to efficiently using his vampire powers, meaning that, he is still not strong enough to be capable of dealing with Alucard and surviving an encounter with him.
As for Moka's reaction, well I believe that everyone will be shocked once Tsukune reappears, especially the girls (Kurumu, Mizore, and Moka), once they notice that the Holy Lock has been broken, but despite that, Tsukune still manages to stay sane, and isn't succumbing to the influence of the Shinso blood flowing in his veins.