Great story, amazing surprises and extremely lovable cast. I did not like some of the turns towards the end, and the needless stretching of the climax, but directors have to be commended for avoiding the obvious story arc there too.
The makers had the impossible task in coming up with a concluding episode that would not disappoint a vast majority, and one can sympathise with them from this viewpoint. That said, there must have been far better options compared to the path taken whereby a lot of time is spent on reviving the deads (some in ghost forms, some through memory tricks, some through CGI, and some through the unexplained juvenile tricks), keeping the biggest heroes/villains a part of the same two clans, turning the bad guys good, or in chases of unnecessary trinkets.
From the basic plot with planet-sized holes to mechanical acting, uninspiring action with predictable outcomes or laughable themes - for example in the way the President would conveniently slip in and out of his coma - and the worst of all the climax...not much to like.
There are numerous things wrong with the storyline, direction etc, but Luka Chuppi is watchable for a. attempting to take a stand on a controversial topic and b. good humour through a likeable set of characters.