if we were to actually trade down, I'd be totally on board with drafting Dennis Schröder, if purely for patriotic reasons.
I don't like Shroeder much (no offense). He reminds me of a skinnier, slighlty more athletic Darren Collison. He's rail thin, and isn't a great playmaker-all in all, not what I'd be looking for when I give up a superior draft pick.
In a trade down, the guys I'd target are:
Tony Mitchell
Steve Adams
Reggie Bullock
Mitchell is a guy whose stock has plummeted due to poor (terrible) coaching and turmoil in his college program. Yet there's so much to like about him: defense, crazy athleticism, shooting, mobility, and versatillity(don't get fooled by this "tweener" talk, he can comfortably play both the 3 and 4). He'd need some serious teaching, which is why I'd target him only in a trade down with a new coach. But he's one of those guys that you just can't miss.
Adams is tough to put a finger on. In games at Pittsburg, he showed limited post moves while attempting almost no mid-range shots. His points came mainly from catch and finishes around the rim, putbacks, and points in transition. However, at the combine, he displayed a nice mid-range shooting touch and great mobility. If it turns out that the combine was the real deal, then he may be the perfect guy to put next to Cousins for the next decade. However, he's got so many question marks that I'd only take him late in a trade down.
Reggie Bullock is underrated. He's got Mad D, lights-out shooting, blow-you-away athleticism, and doesn't dominate the ball. He'd need to bulk up a bit to play the 3, but that's virtually the only flaw I can see in him. Put on ten, fifteen pounds, and he's our starting SF in an instant.