With the way Wolf moves and plays, I think it might have been better to go with Greninja or Roy. Greninja would have the similar projectile start-up and recovery, spacing aerials, albeit a bit slower, and the more zoning-based game play. Greninja can probably go on the offense faster than Wolf, but probably not as safe due to differing mechanics, especially aerials on-shield. What Greninja won't have other than fur is Wolf's lower jump, higher air acceleration and air speed, stupidly fast pummel, a melee hit for his projectile, and a reflect. Greninja has higher overall ground speed, natural disjoints, a kill projectile, and a kill and set-up throw -- not sure if any of Wolf's throws would kill or how they would work as set-up throws in Smash 4.
Roy would have the low jump of Wolf allowing him to space with aerials similarly, but Roy's aerials aren't going to be a "spammy" as Wolf's. There's also a "consistency" difference which makes sense since outside of Marth and Roy, most characters operate "normally" with some sweet- and sour-spots to Marth and Roy being built around the idea of sweet- and sour-spot placements. Play-style-wise, both Roy and Wolf can be aggressive characters and aggressive zoners, but I think Roy's going to have to be more aggressive since he can't really hang back like Wolf can with his Blaster. Wolf would still have the better air mobility since his air acceleration is much higher and his walk is a bit better since Wolf has a normal walk acceleration compared to Roy and the other FE characters. Wolf would also have the better recovery moves. Even if Wolf only used Wolf Flash, it's probably going to travel faster than Blazer. Like Greninja, though, Roy would boast higher overall ground mobility. Roy's also got natural disjoints, probably the better anti-airs also for that reason, etc.
Doc is also an option. Similar low jumps, similar startup on their projectiles, but much higher recovery on Doc's. Doc won't have Wolf's air mobility or even ground mobility which isn't saying much when their run speed doesn't go above 1.4. Doc might not be able to go off-stage like Wolf since his recovery doesn't have as much horizontal distance as Wolf's. In the long-run, yes since Doc can use Tornado and drift down more, but it won't be like Wolf who could drop off-stage and zip back without much of a problem. That being said, it's not to say Doc's off-stage game is worse than Wolf's. Can't really say since Wolf's not in the game and what changes would have happened that could affect his off-stage game.
Still, I don't think you should try to find a character replacement or force yourself to find a character who is similar and force a different play style. No matter who similar they can be, it just won't be them, especially if you're attached to the character. For example, Necalli is considered similar to Akuma in Street Fighter V, but Necalli isn't Akuma despite possessing similar traits to Akuma such as appearance-wise, red hair and "demonic" look and gameplay-wise, having a divekick and other stuff... I don't follow Necalli much. Necalli is, for one, not Akuma, and while similar even in gameplay, Necalli doesn't have Akuma's typical Gohadoken, a projectile variant, Shakunetsu, and while Necalli does have a dragon punch, it's not the Goshoryuken Akuma has. There's also some input differences; Akuma is purely motion while Necalli has some charge moves. It might be better to just find a different character overall. Even to the point where your Smash 4 main is someone like Captain Falcon who is night and day to Wolf -- Captain Falcon being a rushdown to Wolf's zoner -- or Bowser, a grappler, PAC-MAN, or Rosalina, the first puppeteer, summoner character in Smash.
That being said, I don't blame you. Considering the developers changed Falco's Bair with it ending up looking like Wolf's, Falco's Up Smash started out and still functionally resemble Wolf's, and internally, Falco has Wolf's fall speed and gravity, there are things that feel like Wolf when looking at Falco. Also high air acceleration like Wolf's, but it's not that big of a deal since Falco's air speed is much lower and Falco's air acceleration used to be slower than Fox's in Brawl and pre-1.0.8 Smash 4. Looking at it, I would also not be surprised if the change to Falco's Uair in 1.0.8 wasn't also Wolf-stolen. Different damage, but similar low overall knockback. Same startup too. Conspiracy theories aside, giving a character another character's stuff is probably something the developers shouldn't have done. For customs, at least you can wave it off for some characters as them being capable of doing them, but having difference preferences like Ness having Lucas's Specials or Luigi having Mario's Fireball as a custom, but giving Wolf's Bair animation to Falco? Kind of weird. Part of me feels like it's insulting to the Wolf players. Almost like, "Hey, guess who's not in the game anymore?" Yes, yes, there's only so much you can do for moves, but there could have been something else. I don't know, a crescent kick, turnaround side kick, or a
weird upside-down flip kick? Why not an arm move to make play on Falco using his arms more than Fox? Ironically, Wolf uses more arm attacks than Falco and that was from the get-go.
now?
