Vikram and Namik are both very intense actors and it's a treat to watch them perform. If it wasn't for them, I would've cared far lesser for their respective characters in this show because the writing so far has been very weak - very little on Shiv and Vyom's development coming to a standstill.
However, 60 episodes later, I hope we will finally see more layers to Vyom and just MORE to Shiv. It's very important for the script to handle the confrontation of both characters' place in Sharaya's life well for the story to be effective.To address your main concern - I don't think Vyom will be the villain really. But I am pretty sure he isn't the quintessential hero either. And he has quite a shady family.