I'd like to figure out Roy.
He has the disjoint of a swordsman, but awkward shield safety. Dtilt sweetspot being so strong pushes people out of OoS option range usually, and is + on shield drop. Unlike other swordsmen, whom you try to get in on to reduce their safety... Roy is safer there than most characters. NAir/FAir>jab is a decent frame trap on non-OoS options (FAir/NAir2 being +2 after shield drop and jab being f5 catches anything slower than f3 or f10 OoS perfectly). Edit: Similar to dtilt... which is a natural frame trap when spammed which makes it annoying, especially for lower level players who don't understand rolling behind Roy can lead to fsmash.
Yes, the reward on sourspots is eh, but I've also heard (not experienced or seen outside of training mode) Roy can lead into sweetspots from sourspots. Also, if not, he still gets a hit and has the speed to chase down escapes/sliding usmash to catch landings.
"DI away and jump" is how to get away from his grab strings, but now you need to land with no jump...
These are strong positive attributes. Many people like to talk of his downfalls, and that's what I exploit when I play againsy him, but I find his strengths to be difficult to play around at times.