The case for mobility + burst damage allowing for too much agency in a team game
This combination of strengths gives champions agency across too broad a spectrum.
High Mobility/ Burst: blow up squishy champs with superior target access while also possessing the ability to dance circles around juggernauts and immobile mages.
High burst damage becomes high sustained damage at an easily accessible max cdr.
The only sure counter is hard cc, something that few champs can reliably land against their highly mobile colleagues.
Even then some of these high damage/ high mobility champs cheese defensive tools into their build due to overly generous base stats/ scaling