Well, I guess if I want people to be talking I'd better start with what I'd like to see.
I prefer side battles over front facing ones, I just like seeing the main characters really. I'd love to see more support for those. Holder's stuff is awesome and has a lot of material but it's only one style. I'd be willing to pay quite a bit more for a monster pack that had animation or side battlers. Even a simple Secret of Mana style animation would be pretty cool.
I like the Animated Map Name script. I think having a map name that matches the window skin would be pretty cool, and shouldn't be hard to make happen. There's already some people who've made stuff for this around the forums, I'd be interested to know if it got used by anyone.
I expect supporting the Luna Engine in any way would be popular, although it may just be too customizable for it to make sense. I don't know yet, I'm not a beta tester. It's something I'm keeping my eye on though.
Most mini games probably aren't going to be a good idea since the best use of them is when they're customized just for your game. Maybe some graphics for a gambling game and some colored stones that light up. Other than that, most are going to be pretty specific to only one type of mini game.
So, that's my thoughts so far.