He is an accomplished midfielder, really talented and experience will only make him better. He really benefits from playing in such a technical, well-balanced side. But I am pretty sure he would not be that effective in a different league. His problems are 1) his apparent lack of pace, which is, regarding his age, worrying, cos he won't get any faster. 2) his lack of apparent strengths. Schweinsteiger has his vision, tactical awareness positioning, players like Lampard have their shooting, Ramires has his pace, but Kroos just lacks that x-factor which would make him worldclass.