I don't think that's a good thing... Many riders didn't have the level to participate at the Rio's and the level is going to decrease because they're only 3, so of course they're more countries and we let the chance to participate, but to do it, you have to deserve it! And as there's no "joker" anymore, if the horse doesn't feel good, no matter then because this is too dangerous for the team!
It can permit to have more countries there, to increase rider's productivity because they'll be less than before. They'll have more chances in team than individuals competition but I think it's going to still the same game! The sport is developing and you have to follow it...