Hitler only achieved that by very aggressive actions and threats of war. No way Weimar would do anything of what Hitler risked.
That assumes that aggressive actions were the only way of achieving those gains. Note that the sudaten state is not only smaller than the demands of Hitler OTL and it ends up as a failed state as well. Add in the chaos of the depression but with different leadership in Germany and the desire to avoid war by the western powers - hence allowing Hitler to get so far while he was still so weak - I could see it happening here as well with a more subtle German leadership.