The old system was very frequently trolled. It was rare to get into a game without someone choosing a position they had no intention of playing. So many times someone just sat in the middle delaying the game getting started and locking someone else out from playing. The old system was great when nobody trolled. Sadly, it wasn't that common. The new system of choosing your position resolves that and I'll take that any day over the old one. I think the main problem with drop-ins is that hardly anyone seems to take them seriously. It's open season for selfish gameplay and trolling. I definitely think changes are needed, but the old system would be a perfect solution.