tryndamere ult change/balance

Hi guys, I'm not very much into balance and all but I have been playing tryndamere through bronze and stuff and now i'm silver. From playing tryndamere, I felt that his splitpush is overwhelming and that it gives little to no breathing room if the tryndamere is ahead since he can dive and he will definitely never try to teamfight, but even when he's behind, he still offers a tonne of pressure to top lane and your only option is to burst him and kite him for 5 seconds. What if we changed the ult to 2 seconds and add 1 second for every champ that is 900 range within tryndamere at the time of ult activation? I think this change would balance him in the way that he is more risky to play when the enemy is ahead and can duel tryndamere while buffing his teamfight presence so he will actually join fights and end the problems of him splitpushing.