Only if you're going for "security by obscurity". A gimmick only matters when your opponent doesn't know how to play around it. Once they do, every character becomes "basic" in the way you're looking at things. If you're just doing casual play with friends you're not really at the level where your character choice would hold you back. More likely it's you holding you back. The gimmick advantage might last for a few matches, but if your friends are any good they'll pick up on it and things will be back to normal quickly.
A good character does not has just one single canonical "playstyle" that operates like a flowchart. Your friends wouldn't be adapting to Lucina, they'd be adapting to your Lucina. Do you always get up from the ledge the same way? Do you always approach the same way? Do you always try to roll away when pressured? Do you always try to get out of juggles the same way? It's very easy to fall into habits with these things, and an observant player will pick up on them and punish you hard for your unsafe habits.