Looking at 2nd round WRs that could make it to our range, I honestly think Jermaine Burton might be the best fit of them all.
Dude would compliment Rice extremely well:
https://youtu.be/JcMPI-KNbds?si=0ivSXRVDFTrdrZjl
Look at the adjustment with the ball in the air at :44!
That is EXACTLY what Mahomes is missing.