" 1. Do you think that thanks to big steps taken to legalize practices which were previously Taboo, that the practices/acts mentioned above are much more likely to be legalized?"
No, that's the Slippery Slope Fallacy. There is no ethical argument that can be made on behalf of sexually exploiting children. Recognizing that homosexuals have the same Constitutional right to marry as heterosexuals has nothing to do with pedophilia. Having that on your list is simply doing a disservice to whatever point you're trying to make.
"2. Do you personally think that morally we as a society as from now onwards if we do legalize such acts, are heading in the wrong direction? Therefore do you want to see the acts mentioned above be legalized?"
If outlawing it causes more societal harm than legalizing it, the law needs to be revised. Some examples on your list objectively harms society. Others on your list do significantly less harm to society than outlawing them.
