1. Can't the first issue that you mentioned about election and selection be solved through ijtihaad? 2. Though it is much far fetched but possible that if people are Islamically educated , they will vote for the Islamic minded person. Secondly , the council , who shall be the chief legislator can set some rules for the candidates such as they can set a minimum level of Islamic studies , him being a pious God fearing person , his character being good etc as the prerequisites for the candidates before going into the elections.