I think they should not remove division 5s
If you remove 1 division from every league and add 2 new smaller leagues, we pretty much end in the same spot.
"But climbing is a pain" The new league added in high elo only affects less than 0.5% of the playerbase and the Iron league needs plenty of divisions so even the worst players can experience climbing.
But I'm sure this is not a popular opinion so I'm ready for the mass downvotes!