This is a silly concept.
Don’t want Russian Israelis to start Menschevik blocs... nor French Israelis to start Sarkozy inspired Union pour un Mouvement Populaire party in Israel.
etc etc.
Taxation in Israel is an existential extension of the security of every man woman and child in the state. It has been so since the creation of the state. There has never been extensive graft, fraud and misallocation of tax dollars because every shekel was always going toward multiple priorities that were underfunded.
Russians dominate Yisrael Beitenu. Sephardim dominate Shas. There are Arab parties. And the Likud is full of “Americans”, or Israelis who studies in America. Israel’s political system promotes small parties.