Stockrs, I think the hole in the sump maintains the water table below the corrugated perf pipe. I don’t see a problem with this situation, UNLESS a sewage pipe is also plumbed into the sump pit. If sewage is also being pumped from this sump, then the hole in the sump pit creates the potential for groundwater contamination.
If sewage is being pumped, then patch the hole, or replace the sump pit. If it is just groundwater, or seep water being pumped, then stand back and let her rip. If it ain’t broke, don’t fix it. JWA