Looking at quite a few of the recent events where aircraft are banking hard on DEP, I believe we are seeing the effects of reduced spacing on DEP, especially with similar aircraft. Spacing is far too close between similar variants.
I recently experienced a severe event, in an A321 behind an A320. About 60 seconds behind the A320, we had just rotated, when a hard right, followed by a hard left bank at about 300 feet. Felt like a vertical roller coaster as well.
There have been several very similar events recently in the aviation news, with uncommanded bank at low altitudes, and I am just wondering if this reduced spacing is an issue.