I think listings on exchangers also need preparation. Not the origin of the listing, but an ICO needs to do something or an idea to avoid the dump after the exchanger listing. Buy bcak for example, or staking, or trading competition.
There's a lots of preparation before doing a successful ico's, planning should be well prepared as from the past history after listing value really being dumped, most investors are being trapped while early birds who comes from the presales gain decent, the team should be responsible balancing the progress and able to make the coin succeed.