I really hope that in the future we get a Melee Sheik like character. I don't really know all the Sheik strats but I really like playing her and I think she is a great character for beginners (some wont agree and they are entitled to that). I love juggling with F-tilt, D-tilt, D-air, and U-air. Extending strings and resetting with her quick jab feels nice. Going for deep edge guards with her long lasting B-air and N-air, gimping with her needles, and finishing sick combos with her strong F-air are all so sweet. She also doesn't fall fast so she is fun off stage and she has a slightly above average running speed.
Like I mentioned earlier I don't know all the Sheik know how, but I do know that a lot of her game involves grabs. There is no grabbing in RoA so that part of her play style can't be replicated. However, out of all the things listed above not once did I mention grabbing. It's not that I don't like what Sheik can do with a grab, I love the options, it's just there are plenty of other tools she has that make her fun and that are possible to replicate/add on to/improve in RoA. I know Dan can't just copy the moveset of a whole character and slap it in the game but if a Sheik like character does make an appearance I hope Dan does implement some moves inspired by Sheik's move set.
Obviously each inspired move doesn't have to look exactly like the one from smash but I hope they look similar enough. A few of Sheik's moves I want to see in a Sheik like character are her F-tilt, B-air, U-air, a similar jab, and some kind of strong F-air. These are moves I 100% don't want left out in a Sheik like characters move set. I would like to see D-air and some needle like projectile (which could be the characters elemental form of stage control. Ice needles maybe...I don't really know) but I could live if they weren't added. As for a strong F-air however, I have a few ideas.
One, is just give the character a Sheik like F-air. Strong finisher, simple animation, done. Another idea I've been thinking of is a move similar to Falcon's knee. I know it sounds pretty ridiculous but just give it a chance. I know I've rambled about wanting the knee in RoA in the past but this time I'm really hoping something like this is added. If the F-air was made similar to Falcon's knee I would want it to function like the Melee knee, where there isn't a specific sweet spot hit box, but every hit box is the sweet spot you just have to time it or you will get a weak hit, plus you could get reverse hits.
This kind of move set might be OP if all the moves functioned exactly like Sheik and Falcon's from Melee (Imagine Sheik with Falcon's knee...broken. Also someone needs to make a mod of that in Melee animations and everything. Calling you out MagicScrumpy.) so obviously the moves in this move set could be tweaked so they don't break the game, and then I think this would make for an awesome character. Sick long combos with Sheik inspired moves, all finished with a stylish and hard hitting attack with plenty of freeze frames for you to relish how much you just swagged out on your opponent before they go flying off screen. (There doesn't need to be too many freezes frames, but just enough to make it satisfying. Maybe a little less than Falcon's knee in Smash 4.)
Oh yeah, and Sheik's Up-Smash. Put that in that in the game too.
This is my opinion/wish list. I know what I want isn't going to be what everybody else wants or what Dan would think about putting in the game, but I wanted to share my thoughts anyway. Hope you enjoyed my idea's and that you share your own.