(Now we are entering the realm of instruments I have literally never touched, so keep that in mind when you read my thoughts).
Playability: 4/10. From what I understand, violins are very hard to play. It seems to take a long time for someone to play in tune, probably requiring more energy and dedication than the previously listed instruments.
Aesthetic: 7/10. Violins have a high, bright, far-reaching sound that can be either extremely pleasing or terribly piercing. Since the line is quite thin, it gets a lower score. You can also only play a certain kind of sound with the violin that may not go with every genre or song.
Convenience: 8.5/10. In my mind, ukes and violins are structurally similar (everyone who plays the violin is screaming). By that I mean, they are physically similar in form and shape, as well as in how delicate they are. Granted, violins also come with a bow, which is yet another thing to take into account.