A lot of development ongoing is bringing more ways to add content to SL using external 3D content software, but don't forget about prims! We love prims!
Compared to learning other software, building in SL native prims is a really accessible way to start making things, and I imagine many residents begin that way.
Many builders will have their 'wish list' of a new prim type - here are the first I would like to see :
Box2 - this type is a normal box with its normal cut/slice/taper aligned as they are in a standard box, but with one difference. Instead of the hollow function being aligned to the z-axis, it is instead aligned to the x-axis.
Cylinder2 - again as above - the same as a normal cylinder, but with hollow aligned to the x-axis.
Attached is a picture of just a few shapes that could be made from them.
If you have other prims that you wish for, please add them here :)