nope, right now it is xp trap aka waste your xp.
there is rumor that it will play role in second TD line.
also, I suggest few time that shift BL-9S to second 122 and have D-25(current second 122) to be first 122(current A-19) instead. I feel it is good idea because person has 2 choice, higher pen or higher DPM.
Bobthewonder, on Jul 25 2012 - 20:04, said:
Technically the BL-9S is higher DPM then the BL-10... just you lose 50 penetration or so and all the alpha.
even if it is true, people who want DPM would go for D-25 instead.
Edited by death666grim, Jul 25 2012 - 20:06.