Does it still require manual coding, or did they get smart and make an easy to use interface?
Rainmeter is far to complex to skinned in an "easy to use interface". just as an example (the position of a marker on a world map depending on coordinates and screensize):
a point and click interface would actually make it harder to create such a thing.
also Rainmeter has more skinners and users than any of the "easy to use interface" apps, so they must be doing something right.