No candidate that drops-out should be allowed to assign their delegates to any other candidate. The people voted for candidate 'A', not candidate 'A or B', and they deserve to have the delegates decided according to the vote, not by political favoritism. A run-off primary for the last two standing in each party would be a logical step.

No more caucuses. Secret ballot elections only. Peer, social and corporate pressures can and will skew the caucus' intent.

Official state or national ID required to vote or caucus. A regional database of those that have already cast legal votes, preventing anyone from voting in more than one district.

Deem Hollywood irrelevant to the process, and thusly not allowed to contribute. (ok...not likely, but wouldn't it be nice, lol)

No political ads allowed, except from the candidates themselves. No 528's, or anything like them. Let the candidates decide the content of their message, not the idiots on the fringe.
Citizens' Groups and Political Parties in the United States

Instead of debates...topic-oriented press confrences. (national security, the economy, healthcare...) No swaying off-topic, as topic will be discussed at a later conference. Have both 'sides' of the legit media asking the questions, not a friggin snowman nor a gay retired general, nor a slut confessing her 'love' for a married candidate. No more soft-ball moderators covering for their favorite candidates' shortcomings.