Transition will certainly help me express my feminine side, but I think I will keep all of my previous interests. I've always loved playing action video games, both before and after my dysphoria set in. In fact, one of the things that helped me cope was gaming. Since the vast majority of people in the gaming community perceived me as female anyway, I could socialize in feminine ways in an online game in ways in which it would be much harder to do while pretending to be a man in the real world.
I tried making a male character once in Guild Wars, because I didn't care too much for the look of the female warrior class. Even though I love the look of the male warrior, I eventually deleted him because it became very awkward. People kept asking whether or not I was a girl, and that I must be a girl because of the way I behaved. So I replaced the character and made every character after that to be female, regardless of whether the character designs looked good or not.
I think I'll still like the action games after transition. I like the strategy, the skill, and the timing involved in action and fighting games. It just seems to be a natural part of who I am to be interested in physical dexterity. I also like playing discgolf and practicing parkour for the same reasons. If anything, I will probably enjoy parkour even more after transition, as my body will feel much more natural to me.