I am in sync with your POV here albeit with a difference.See if the enemy is already in alert mode then whether it's a Naagin or any human being he/she might get caught in the enemy's clutches or at best escape from the captors.
Yamini was quite the ruthless and cunning villain and despite wearing protective rings including plots etc to subdue both the mom-daughter duo of Shivanya and Shivangi she never succeeded completely in defeating them.It was an equal match between her and the Naagins.
Same thing can also be said for Sumitra vs Bela.
One of the Suri men might just survive Ahana's revenge and that could be Parmeet bcoz then he can manipulate Aryamaan against Ahana.
And it's not that the Suris never knew about Ahana's impending attack that's why they kept the Dragon and Wolf on standby mode however what they lacked was the real face of Anantkul Naagin's identity which was there in the Naag Mandir.
The Suris were not fools and infiltrated every corner/sector of the country successfully with regards to both media and politics.
Infact Aryamaan discovering her identity shows that Ahana has failed to cover her tracks like Shivanya or Shivangi before her.Her plans are second to none but there are critical gaps within her mission.
Whether it's Shivanya Shivangi or Bela it took quite a significant amount of time before their real Naagin identities were exposed either before their mates or enemies.
On the other hand Ahana chose to leave her enemies like Sapera or that corrupt cop to escape.
Radhika is not gonna be an easy pick like Sapera or the Suri trio.She already enters with a momentum over Ahana in the form of her ex Aryamaan.
And Aryamaan is Ahana's biggest vulnerability.
It's upto the CV's to balance Ahana's character graph with Radhika.
Very good points raised. I don't have much to add. Tbh, the only Suri who looks like can give some takkar to Ananta is the Elder Suri Parmeet . He's the leader of their small party and his friends and brothers mostly follow his leadership blindly. He also asked Aryaman to look into the Naagmani. He's smart enough to grab an opportunity and modify plans as per need ( he quickly decided to marry Aryaman to Ahana instead of Vikram because he thought that'd give him more influence over Ahana and in turn the naagmani. )
He's also the one who was training the dragon who seemed to be the biggest weapon against naagin. I think the dragon underestimated naagin during their 1st turn and because of that overconfidence got defeated easily.
Now we have to see how many dragons do they bring. Was Radhika the same dragon that they set against the naagin or is there entire clans of dragon just like naagins ?
Arya is a killer that innocent act didn't fool me, hope it helps 

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