Of course, when Moshiach comes, there'll be plenty of "balance"!
In the ideal Torah Society, Jews are actually executed for Sabbath and Yom Tov profanation, adultery, idolatry, incest, witchcraft, profaning the Mikdash etc.
Gentiles are actually executed for violating any of the 7 Noahide Laws.
Amalekite baby girls are actually put to death on the spot etc etc
Gentiles who resist in the slightest Jewish control of Eretz Yisrael, are summarily dispatched.
Yes: there'll be plenty of balance in Halcyon Days to come!
Who's Ideal Torah society are you refering to?
Certainly not HaShem's. The G-d of Avraham, Yitzhak and Yacov isa G-dof justice, true. But He is also a G-d of mercy.
As for all of these things you think people should be put to death for, exactly who defines what a Shabbat infraction is? A rabbi? A group of rabbis? Extrapolating on existing written Torah?
I'll quit being a Jew before I let some jack-ass Rabbi tell me I am doomed to death for walking to the Store on Shabbat. Or for driving a car.
Or do you not know the scripture from Yermiyah?
Yermiyah 31: 34 (JPS)
"and they shall teach no more every man his neighbour, and every man his brother, saying: 'Know HaShem'; for they shall all know Me, from the least of them unto the greatest of them, saith HaShem; for I will forgive their iniquity, and their sin will I remember no more."
This does not sound like someone ready to commit anyone and everyone who sins to death...but rather, even though the man or woman deserves death...G-d is merciful to them and forgives them. In the world to come, I think the Moshiach is going to be a bit nicer and more loving that you seem to believe.