They are of such high quality and are diverse enough in style and subject, The art adds a whole other level to collecting and playing that I enjoy. I have a few favorite artists including some that Magic interviewed recently while at one of the large events for Modern Masters 2015.
An interview with Mark Tedin
An interview with Rob Alexander
Ive never thought about doing this for a deck build. To pick the theme and strategy of the deck based on all the cards being painted from one artist. This format is called Vintage Artist Constructed.
Check out all the videos from the weekend on the MTG website