Theocracy is impossible? Okay. After some time, becsuse of demography, the majority on the Knesset is got by Orthodox parties. They form the government and are able to carry out their policy as they want. Is it possible? And my previous questions still stand - about religious minorities, women and the public rules.
Unless I am mistaken, in some places the Orthodoxes had their demands met about public transport being not operated in Sabbath, for example.
I don't think You understand the term Theocracy.
Orthodox parties having a majority in the Knesset doesn't mean they get to forcefully impose anything against the will of the nation. Neither Jewish Law a dogmatic body, but a dynamic discussion that evolves around the situation at the time, and as I've said part of its principles is that one cannot impose that which the nation is incapable to follow or accept, even if Torah prescribes that. Nor does it mean there's a single superior authority in that equation, or that Jewish Law itself, in any current form has more authority than what a big community, or person received as traditional practice.
For example, if most scholars rule that on a specific fast day there's not to be any work done,
while Your grandma was taught to clean the house on that day - all the scholars can do is find a rationale for that in the Jewish Law -
heritage is of higher authority than religious rule.
If the nation elects them, it can vote them out the same way. What You're probably imagining when saying "theocracy" is closer to the rule that was in Israel when Moses A"H was the authority, and that too wasn't a single man's rule rather a system of courts representing each tribe, as if say each state in the US had equal representation and a president who's decision was needed only when the lower courts had no ruling.
Your framing of the question in terms of theocracy is irrelevant, because prophets are neither elected, nor the orthodox parties pertain to be one's. That's about where their rule ends and real theocracy starts, no one can choose that and no one can make that a reality other than G-d Himself.
Same goes with the Sanhedrion, it's a different equation of reality altogether that no orthodox party is capable of fulfilling.
As for transport on Shabbat, it may be a surprise but many who demand it stops for the day are simple people not belonging to any orthodox party, who simply prefer some quiet once in a week without any religious reasoning. We've had demonstration in most secular communities of Holon, Givataim, Ramat Gan etc - Tel Aviv area demanding just that. While on the other hand the orthodox parties look for ways to indirectly allow that in places of greater demand, so that they can find middle ground and function as a government on issues they see more important. They don't force it through law, but simply by boycotting companies en mass as consumers.
In Jerusalem for example, if You go by bus or tram, You'll see both mixed situations, and separation, where men are at the front and women at the back volunterally - it depends solely on the public using the transport at the time.
No one will force You out if You don't apply by their standard - simply won't sit near You and go to another part of the bus.