the answer to this is not very straightforward........a lot of factors to be taken into consideration.........firstly what changes are to be brought in at the tournament in the coming years will play a big role, i mean the grass and the balls........will they speed up again reducing the rye content, or they still prefer durability over surface speed........secondly a lot of next gen players haven't really accomplished the movement requirements of grass and are facing issues with footing on the surface, they are still kind of getting used to sustaining their level of play from other surfaces to this surface.........
given the massive prize money these players enjoy these days even at non-slam events, i am not sure anyone from the next generation is really ready to take all that pain of developing themselves on grass for just one tournament to be played on grass in a year.........so motivation is a factor as well........i do not see anyone convincing on grass from the next gen, so will not pick anyone but just say this much that whoever serves big and moves well on the surface will always be in with a chance after the big 3 are done winning wimbledon........