Tryndamere W rework
Tryndamere needs a lot more than just a new W, but here's an attempt to add more interactivity to his kit:
##Mocking Shout
Tryndamere challenges all enemies around him. He shouts "FIGHT ME!", releasing an AOE that puts a mark of "challenge" on all enemies in that area, and reduces their damage dealt to Tryndamere for 3 seconds. If a challenged champion moves too far away from Tryndamere, he shouts "COWARD!" and they are slowed.
It's the same thematic principal of the current mocking shout, but it has clear consequences for enemies affected. It also gives Tryndamere more usefulness in group combat, as he can potentially cc or tank multiple champions mometarily. There is of course the weird case of Tryndameres who use this ability to escape fights... kinda of breaks the thematic, but I guess his ult is used the same way as well.