I also like the idea of Sorcerer as spell specialist, ie, fewer known spells but can do more with them. With Metamagic and now Innate Sorcery, the foundations are there, but not quite. Metamagic as the tool to augment spells makes sense, but access to Metamagic is extremely limited, and tbh, I want it to feel more like I am breaking rules, like the old Twin Spell did. Let Quicken Spell actually break the "no two leveled spells in a turn" rule. Give us a Metamagic that removes Concentration. Unerring Spell makes it so attack roll spells turn a miss into a hit and a hit into a critical hit. Whackier stuff like Vampiric Spell, apply this metamagic to a spell that deals Psychic, Poison or Necrotic damage and it now also heals the caster. Then, maybe give some Metamagics only to some subclasses. Like only Draconic Sorcerers can take Penetrating Spell, which is a metamagic that replicates the Elemental Adept feat. Obviously, Sorcery point costs would have to be revisited, and maybe some have to be level gated so you can't get them until 10th level, but I feel like Metamagic is an undeveloped area for the Sorcerer.