My preferred reform would be for H1B to be fully unrestricted. If you're going to allow labor into the country, let it compete on fully equal footing with domestic labor. For the reasons Smith articulates and you've either failed to read or are intentionally choosing to ignore, employers already have the upper hand.
A better balance of power would be to repeal anti-unionization laws such as the Orwellian (100th anniversary of his death by the way) doublespeak "right to work" (really: "right to fire, and disrupt organization attempts") and ensure that labor has the same access to collusive collective action and mobility as capital and finance.