It was just nice to have, it answered almost everything and that wasn't something red was used to being able to do
Conversely, with Chronomaton the problem was that youd invest a lot of time and mana into a creature, and then when you finally got around to trying to do something with it your opponent could just kill it and youd have nothing to show for it but Hangarback Walker is very much the opposite unless your opponent has just the right removal spell
From what I have personally seen, all WOTC 3 Borders have no bump
This card hasn't achieved quite the same level of popularity as its fellow Evasive champion Mickey Mouse: Brave Little Tailor, but he can pull off quite a lot if the right conditions align
Notably, this counts for any nontoken creature dying, not just your own
The main weakness is a dependence on the battlefield