Unlike Kilo, where only 2 out of 6 tubes can fire LACMs, in Scorpene, all 6 can fire MdCN. And it can very well carry 18 MdCN or a mix of 12 MdCN and 6 F21 torpedoes.Almost all subs can fire missiles from torpedo tubes. At best, 6 missiles, and only 1 or 2 capable of being fired at once. It's not tactically efficient. What I'm referring to is a larger volley with 8-12 missiles from VLS. IN wants 12 Brahmos-Ms in VLS for their next batch of submarines.
Brahmos is a costly system, if need arises to say attack Quetta Airbase from Arabian sea, it would be better to use 20-30 Klubs, not 20-30 Brahmos, they are costly and would be used for specific targets only as we cannot have them in very large numbers, but we can have something like Klub or MdCN in thousands , Navy wants something like 1000-1500km range subsonic Klub but with better terminal guidance to increase accuracy. The French and British SSNs fire LACMs from torpedo tubes, so no problem for IN to use Scorpene for the same purpose.
It will only reduce complications.