Bargello quilts and paper pieced were invented at later dates . They are not traditional. Don't know the dates for them introduced into the quilting world. Crystals and glued on embellishments are modern to the quilt world with the invention of waterproof glues. Hope this will help with the definition of modern quilts. Watercolors and pens, zen tangled designs would be considered modern I think.
We entered a block contest where rule stated must bea traditional block,...but the winner was a star that was paper pieced...I won't enter their contest t his year!