I just passed my 5 year mark a couple of weeks ago and yes, my "new" tongue is VERY sensitive to burning, even 5 years after surgery. I eat most of my food cold because I am always afraid of the burn. I used to experience the tingling quite frequently but not so much anymore.
My "new" tongue is still paler than the real one. That has never changed.

Tongue cancer diagnosed 12/01. Tumor removed. No chemo, no radiation. Early stage 3 SCC of the tongue recurrance 12/06, well differentiated. Hemiglossectomy, free flap, neck dissection 3/26/07. IMRT Tx finished 8-7-07(30 Tx's). No chemo.