Dont know if it really is my strongest, but surely is the one I enjoy more: scripting. It's really simple, scripts create new events in the game, without new scripts the game, despite looking cool, would "feel" too much like the original... Alright, that may depend on the hacker's skills (Baro's Quartz didnt have that many new scripts but it still felt as something quite different), but I'm an extremist, I want to see A LOT of new events on the hack, that's why I decided to take the path of scripting.
Being honest, I dont think I'm that great of a scripter, there's a lot of commands I'm really not interested in getting involved with, and I should be updating my head's scripting database sometime. Still, I think it's the area that you could say I'm better at.
I feel exactly same, I like many new events in hacks, that's why I prefer scripting over mapping :)
With XSE, scripting has become a lot more fun, and now it's easier to learn, compared to pokescript, and that made me return to hacking (Yep, I quit it a year ago or something, but now I'm back :P )