It isn't fair to call this an intense drama about relationships, sexuality, or even politics for that matter. Kaathal is a drama indeed, though its "dramatic" quotient is severely underplayed and kept subtle until the final moments where it all culminates in a stretch of heart-breaking scenes. I like how a mainstream actor who holds major box-office potential like Mammookka chose to play the character of Mathew Devassy. It not only opens the doors to several conversations and discussions but also gives the subject all the attention it deserves.
As a director, I feel Jeo Baby has put his cast to sensational use, and that goes out to every little supporting character as well. I also realized how much I missed seeing Jyothika on screen. The use of rain in the pre-interval stretch beautifully symbolizes the melancholy in the household at that particular point. How rain turns into a rainbow at the end is a neat directorial touch. Mathews Pulickan's music and background score aren't used to amplify emotions in every scene, but reserved for those segments that absolutely require them.
While the courtroom drama in the second half brings plenty of backstory into light, the writers also use this section to ask pertinent questions to the audiences. It even addresses the Decriminalization of Section 377, integrating it as a law point within the story. The best thing about it all is that it treats every character (and their interpersonal relationships) with dignity, even in the toughest of situations. That's, you know, wonderful to see! There's still the (very real) question of Mathew's voting community being equally progressive and accepting (of him), though in this particular film, I like to believe that's the case.
P. S. - Many production houses in the Malayalam industry can learn a thing or two from Mammootty Kampany (and its owner).