They just need to eliminate the road games for the division series. Keep it at 5 but all 5 games are at the highest seeds stadium. The league championship series would still have a home and away games.
I wouldn’t mind also having the World Series played in neutral stadiums. It would be one for each league. The stadiums must have a roof or be in a warm weather climate with low chances of rain. So basically Houston, Phoenix, LA, San Diego, San Francisco, Las Vegas, Tampa Bay, Milwaukee and Toronto. I may have missed a domed team or a city where rain would be unlikely with a warm climate.