First suggestion: Wedge ramps,
Like say you wanted to make a build like this:

or this:

You couldn't do it, But with Wedge ramps?
Yup.
And how about some circle print bricks.
Not like this:

But like these:

I was thinking 3 variants of the above.
4 sided decal brick, 2 sided, and 1 sided.
Again I suggest print bricks made from above bricks.