i don't know if it is possible to bastardize the dominican constitution, as far as i know, it has been changed about 35 times, more than any other constitution in the world.
i understand that the latin american fixation on term limits has historical reasons, but i think that they are focusing their attention on the wrong issue.
the personalistic and clientelistic structure of dominican politics did not, and will not change because term limits have been introduced. and as was demonstrated by hipolito, the election of the wrong president can have catastrophic consequences. i also think that his cronies were so shameless in their corruption because of the term limit. as far as they knew, they had four years to make the most of their situation and than it was somebody elses turn.
leonel has structured the party around himself, this ensures his power, but also a certain degree of accountability in government and party. him stepping down could easily result in turf wars and fractionalization of the pld. in the end, they guy with the most clients would succeed him. he would have the most clients, because he was they guy who promised to distribute more spoils than his competitors. all his clients would demand their share once he becomes president, and this could result in what we have seen under hipolito.
if the pld candidate were to loose the elections, the prd would get into power which is already plagued by the same problem, meanwhile the pld as stabilizing force in dominican politics would start to disintegrate.
maybe this is also why he is keeping open the possibility of another run. this gives him the opportunity to select his successor carefully and behind closed doors, thus preventing internal power struggles inside the party.