Since I believe the Army has no need for 68W, should I reclassify to 68C or 68D?

I don't know where you came off with this random statement about the Army not needing 68Ws but that's a lie.
Maybe you mean that since "you" aren't currently doing anything medical you want to reclass, but you might want avoid disparaging the most sacred MOS. Medics have been saving lives on and off the battlefields as long as there has been war.
If you want to do something "high speed" as you said, you need to be high speed. Instead of complaining, go do something. Go to Ranger School, Ranger Regiment, 160th SOAR, W1 SOCM, Flight Paramedic.

How is it the Army has no need for 68Ws? Say those words to any line unit and/or any line medic and you may just be on the receiving end of an ass chewing. You want to do your job, put in a 4187 for a transfer to a line unit.

My Army brothers and sisters. I was a 91b, medic and a 91d, OR Specialist combat veteran. I am currently a civilian Operating Room Nurse doing very well. I believe through the immature open question of the SPC, he meant to ask if there is more medically inclined MOSs that would satisfy his thirst. I'm sure he would not dare disrespect me or any of us Vets that have provided selfless life saving acts throughout Army history. I think he wants to be a better soldier.
As previously stated, if you want high speed in the field, line units and Special Teams is definitely the way to go. If you want high speed in a base hospital Charlie school or Delta school is great also. Whichever path you choose will benefit the ARMY and you, when you get out. The training you get in the ARMY is unsurpassed.
Good luck on your choice.