Sugestions for new stuff/Add-ons
First off, welcome to the forums!
Secondly, a search would probably have benefited you, since a number of these have been suggested before. However, since you're new, I'll go through them individually:
1) Sports pack: Skateboards are unlikely to happen, but possible, since it could basically be a skin change for the Prestige Power Slide. Not sure how much work this would be, but would be tough to work in with power animations, unless it was just a power effect, and not an actual item.
2) Creature Pack: Could be potentially a LOT of work, depending on how you imagine this to work with power animations. Would you be able to attack while walking on all fours, or would you have to stand first? Wall crawling is VERY unlikely to happen, since it requires the collision engine to work in a way that it can't currently support.
3) Droid Pack: Unlikely, since it basically necessitates a new skeleton be created, and every animation in the game to be created anew for the new skeleton.
Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted.
~Ralph Waldo Emerson
"I was just the one with the most unsolicited sombrero." - Traegus
From the desk of @Lady Recluse - Freedom
More add-ons for stance/walk/run like the ninja pack would be wonderful and give more versatility to characters.
My ideas so far are...
Sports pack - add rollerblades and skateboard with a roll animation instead of walk and a few more sporty costume parts.
Creature pack - adds creature crawl on all fours stance creature costume parts, and maybe a short wall crawl.
Robotics/Droid pack - adds crawler and tank treads lower half and more less humanoid robot costume parts.