It makes a lot of sense, as said, for shorter races.
As for contributing to first turn pile ups, pro’ly not so much. In a three lap race, the driver who leaves the first turn, in the lead, has a massive advantage over the rest of the field. Many people who are good honest drivers, know this, and many, may suspend their good driving habits until the field is through the first set of turns.
The real solution is for longer races with drivers having similar skill levels. My friends and I are all of similar skill levels, and as we did have done for fifteen years, once we learn the new tracks better, build our garages, and really start tweaking and fine tuning our cars, we will move to much longer, much more competitive races, full damage. We restart if there is a legit pile up within the first lap or two, but only once. We race for points and bragging rights. The races are fun, and because they are longer, and with with full damage, the races are pretty mild in the first lap. We try to make them last 45minutes to an hour, or at least one pit stop, We go hard from the flag to flag, but that first lap, and that first set of turns are taken well within all of scope of talents. It is a long race, and there will be plenty of time for passing. Building consistency lap to lap, and race to race is key. We run a lower class race on the “club circuit” then a full blown, number plates only race (GT3, GTLM, Classic GT, unlimited, Indy, F1 etc.).
The weekly winner gets treated to a very nice lunch; the season winner gets the pot (usually about $100 to $200 depending on the cars and the season length). The one driver above our skill level takes a handicap in either laps, or car performace index (we know what lap times he makes, and we make, so it easy to handicap him). He wins a lot, but we then go get revenge in Gears of War.
The real key to reducing those pile ups, is getting drivers of similar skill together in each race, and having longer races.
Qualifying would also help. That or enabling grid order by your hot lap.