What is Jarvans actual gameplay fantasy?

I have been thinking about this for a while and i cant actualy figure it out. His gameplay niche is jumping into 4 people and locking them up in makeshift arena but thats it i cant find any other real classification for him like you can with other champions. For example lets take Yasuo(as much as he is hated) people know what him as the swift and agile blademaster who cuts through his foes with precision and speed. Jarvan is know as the guy who dashes in and ults someone and does nothing until his CDs come back. Does Riot have any plans of updating his kit giving a few extra things to work with?
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