Marksman Mobility (READ BEFORE DOWNVOTING)
I see the trend of:


being great ADCs and I realize that while their damage output is ridiculously high, no one bats an eye at their mobility.
You can also see a trend of:

being underplayed, and weaker, because of their vulnerability. They have underwhelming and conditional mobility
or have none at all

Meanwhile

have refundable dashes, jumps, and blinks,
has constant high movement speed,
has a damage-dealing jump (and a periodic mega-jump)
Now I know that there are other factors that make them stronger / weaker (damage, utility, wave clear) but mobility is one that cannot be ignored.