pinning crankshaft

besides the headache of matching up a replacement balancer on any half holes i make on the crank snout, are there any drawbacks?
I feel like maybe i should do this to a brand new balancer? It's going to be a headache to try and match any holes that aren't OEM?

Then again, my entire life, i've only had one harmonic balancer that came apart, while still on the crankshaft. I just spot welded it back on center the best i could. It's a wobbler.