So Second Coil has been destroyed

[Zerona]

It does not take away from the game more than it adds to it, your example of replacing Titan EX with Titan HM is not accurate, it is more akin to you still have Titan EX and still have Titan HM in that you still have second coil normal and second coil savage.

However, you now have a huge gap in difficulty between savage and normal. A new player whose skill level falls in that middle area will do SCoB normal and think it's much too easy. Then they might try Savage SCoB and find it much too difficult. This would lead to the conclusion that the game is unbalanced and is what I mean by hurting the game.