That's what I did with my 10-30 plugs.
Grind the neutral-ground prong so it will fit both 10-30 and 10-50 receptacles.
Now I mod 14-50 receptacles covers to take both 14-30 and 14-50 plugs, since they use the same internals.
"THE ABOVE POST CONTAINS MISLEADING AND INACCURATE INFORMATION. PLEASE CONSIDER IT OPINION, NOT FACT". -someone who I offended and is unable to produce the facts in question.
OEM is not going to supply modified connectors. Adapter would be the limit.
1 bar lost at 21,451 miles, 16 months.
2 bar lost at 35,339 miles, 25 months.
LEAF traded at 45,400 miles for a RAV4-EV
RAV4 traded in for I-Pace Dec 2018