We can expect TONS of random encounters in GTA VI
MikeShowSha, a content creator who also visited Rockstar North for an exclusive preview talked about one random encounter that occurred whilst watching Rob Nelson play. It was about two female robbers who were trapped inside a jewellery store they were robbing after triggering the alarm, but the important piece of information is that the staff of Rockstar noted that they haven't encountered that exact scenario in MONTHS of playtesting. One criticism I had personally of RDR2 is that there was not enough random encounters in the world. With 114, which seemed like a lot, but truthfully wasn't. An