Sure, if you're feeling posh and all.
My hope is that they don't take this Boston setting too far. I'm not interested in going on a sightseeing trip of random sports stadiums or reliving the revolutionary war or shooting muskets. I want to play Fallout.
One of Fallout's underlying themes are surviving groups clinging to old world ideals and symbols. But, I understand what you're saying.
In all fairness, the laser rifle probably doesn't have rifling either.
Keep in mind one of the most important part of the musket was actually the bayonet. Fire a few volleys to demoralize your opponent, then drive them from the filed in a massed charge.
In game you could make it so that opponents get debuffs against a charge while using a bayonet equipped musket. Get close, fire you're weapon, and stick 'em like a pig.
This is not a thinly veiled attempt to allow me to banzai charge deatchlaws, I swear.
A Cavalry Sabre, straight up Cannon, and bayonets would be cool.
A cavalry saber would be practical for a melee weapon, as long as it was a bona-fide cavalry saber and not some flimsy ceremonial thing. Anything else... well, they were rendered obsolete by firearms technology advancement for a reason. When it takes you a significant portion of a minute to recharge just one shot even when the process is drilled into you... yeah.
And then there's the fact that it just doesn't have the muzzle velocity that a modern firearm with smokeless powder can do. I wouldn't count on them to be useful in a feral ghoul swarm on account of its one shot per twenty-ish seconds, and I wouldn't count on them in the single deathclaw barreling at me because it'd just plink off its hide. They'd at best be relegated to "Joke Item" status, and not of the lethal variety. At worst, they'd be scrappy weapons that no one uses.