2D Engine features

Im busy creating a 2D Graphics engine that uses DirectDraw from DirectX 7 and I'm a bit stuck on decideing what features it should hav. For example here are some of the things it can do so far:

• Load Bitmaps as sprites
• Set background Image or Color
• Animated sprites
• Alpha blending
• Use DirectInput for mouse and keyborad
• Manage the ordering of Images
• Display Text
• Get available display modes

Theres some other things it can do but thats all I can really think of at the moment.

Does anyone have any other ideas for what else I could add to it.
Thanx for any help.

That depends how specialized and how large you want the engine to be. You could add a tile engine, but if the developer doesn't want a tile engine it will be useless bulk.

There are lots of things like that, you'll have to make those decisions.

You could add a physics engine, but again somebody might not want it.

check out my prog: www.geocities.com/mp_crew2001

maybe it will give you some ideas...