After several accidents in the 60's and 70's I thought it had become routine to time acceleration to V1
Never heard this at all...
Please understand that on a VERY long runway, it is unlikely that a SH twin engined aircraft will ever have a "Stop V1" less than VR. Their manual might produce a "V1", but that may well be a "Go V1" or somewhere in between...
Whilst not an MD-80 pilot, and more than willing to be corrected by one, I fly A319/320/321 around Europe and rarely will a genuine "Stop V1" be produced - exceptions of course ABZ and similar
NoD