In all honesty, I can see this going two ways:
Way One - After going through a lot of effort in the post season to finally win (see Game 4 of Indiana and Game 6 of Boston), LeBron begins to gas out and they aren't willing to contend or stay motivated (yes, I do question that with a team that gives 0 damns about the regular season). So a fate like the Big 3 Celtics - A ring and continuous contention, because even with a questionable motivation they'll stay strong.
Way Two - LeBron decides to pummel my theory to the ground (I actually am not convinced he has peaked) and they stay in contention for another 3 years and win another ring or two (hell maybe they 4peat
). With Wade on the decline, I can't see them staying in contention for more than five or four years.
So, I imagine Way two happening. I still have plenty of doubts they won't repeat, I still doubt their "olol regular season doesn't matter" attitude another attitudes they hold, but I do think LeBron will have a better year than this year. So I think it's reasonable to say one or two rings is possible.