So, question.
One that I'm lifting from an Eventhubs article actually: Are "essential" characters becoming a problem for fighting game rosters?
Yes and no. If I get into too many specifics it will become too much of a matter of taste, but I do generally think the obligation to have x or y character can turn a roster long-term if those characters get exclusive seats over more flavorful, original characters. Smash hasn't suffered too much from this yet but this could certainly start to reveal itself as a problem if/when we need to lose a sufficient amount of the roster instead of just 5 or 6 mostly derivative characters.
A personal view I've shared in the past reflects this fairly well. I think Incineroar offers more to the roster dynamically compared to Lucario. I think Incineroar is one of the better designed characters in the game and Lucario is one of the worst. In my experience, Lucario is an unpopular character to play and I see people represent Incineroar online and in tournament decently often. But most people here would agree that Lucario is a somewhat essential addition due to his external popularity and marketability, and that Incineroar is expendable due to his lack thereof. In this scenario, I think this theoretical mindset is unfortunate because it dismisses every factor that is relevant to actual gameplay in favor of objective checklist mentality. Essentiality can obstruct what I view as exciting.
But Smash is fortunately a game that prioritizes originality and roster dynamics from the jump. Most of the essential characters in Smash are also fun, popular and/or unique in their own right to provide the game with a diverse spread of archetypes and gameplay opportunities. Samus, Kirby, Fox, Ness, Captain Falcon, Bowser... all would be considered essential components of the series and are still carrying their weight. But next game offers the first time where this complaint
could start to rear its head as a relevant talking point... in which case, we'll get there if we get there I suppose.
In a lesser series Everyone is Here would have created a relative drought of exciting newcomers but instead I think all of UItimate's base fighters were great choices. They were efficient with what limited space and time they had. So truthfully, I think Smash is good at subverting this concern but again, it might hit a more sour spot when we have to
lose more fighters and see who sticks around and is added instead.