That would be nice, make him more 'serious'. Remove the funny looking attacks, like Prep K:K and 1K (altho I really love this move).
Some ideas on Raph stances:
New Prep (assuming they refuse to give him back his multiple preps)
Prep A - Same, make it track to Raph's left and give advantage on hit. (Make it slightly unsafe, around -14?)
Prep 4A - 4A, please give this Crumple Stun on CH.
Prep 4[A] - Raphael will cancel his 4A into VE.
Prep B series - Same, but give Prep B(B)~Prep better transition frames
Prep 4B - 8WR 4B
Prep K - High impact, right side mid kick (similar to NM's 3K). Tracks to Raph's right, Double Over Stun on CH. (-15?)
Prep B+K - removed, since there's Prep 4A now.
Prep Throw - *This throw animation will be different from the normal throw animation.
Prep 2~SEA - Same
New VE: Bigger Step, no more Auto-Evade.
VE A - Same
VE 2A - Quick Low Horizontal Swipe, Low damage (-16 on block)
VE B series - Same
VE K - Same
VE (K) - Chargeable version of VE K, huge blockstun + soul gauge.
VE A+B - Slow Horizontal High, slight block stun, decent gauge.
VE 4/6 - Raphael teleports while in VE (not the current teleport animation), 4/6 just moves him forward or backwards (about 2 character spaces). Not in front or behind the enemy. Recovers neutral.
VE Throw - Same deal. Remove the blood suck on Voldo. Raph is not blind!
Jump Evade (7_8_9G, Raph has no normal jump)
JE ABB - Hori Mid, Vert Mid, 236B. JE AB is NC, JE ABB is NCC.
JE 1A - SC 2 1A (Low hori swipe)
JE 4/6 - Raphael teleports while JEing, similar to VE 4/6.
Notes:
*Raphael will push the enemy with his sword hilt, if it connects, Raphael will stab the enemy's heart (15 dmg) while the enemy's being pushed back, does a little twist (20 dmg), then pulling his rapier out (15 dmg) (Total of 50 dmg). The enemy will drop kneeling down then fall face down feet away.
EDIT:
1. Typo error, 60 dmg should be 50 dmg.
2. Forgot to add VE Throw.
3. Prep 4aG to Prep 4[A]