sorcerer subclass that expads on existing features

[Iampower]

i was reading through the champion fighter subclass and got the idea of making subclasses that just expand on existing features of the base class, like what the champion does for the fighter.

i started with sorcerer and it took a while to figure out a good flavor for this. tell me what you think.

Weave-born

Arcane Sight
You learn Detect Magic as a Sorcerer Spell and can cast it at will.

Threads of the Weave
The weave is the source of all magic and your connection to it allows you to learn spells that you otherwise would not be able to. At 1st level, you learn a spell from any class’s spell list. The spell must be of a level you can cast, as shown in the Sorcerer table, or a cantrip. The spell counts as a sorcerer spell for you but doesn’t count against your number of sorcerer spells known.
You learn additional spells at 6th level, 14th level, and 18th level. When you replace a spell you learn from this feature, you can replace it with a spell from any spell list.

(alternate description)
The weave is the source of all magic and your connection to it allows you to cast spells that you otherwise would not be able to. At the end of a long rest, choose one cantrip and any number of spells from any class’s spell list with a total spell level equal to or lower than half your sorcerer level rounded up. You cannot have more spells of a given level than the number of spell slots you have of the same level. For example; a level 15 sorcerer can have up to 8 spell levels of spells but no more than four 1st level spells or three 2nd level spells.
The spells count as sorcerer spells for you and do not count against your known spells. you can change the spells at the end of a long rest. At 11th level, you can choose 2 cantrips.

Additional Metamagic
At 6th level, you gain an additional Metamagic option.

Spell Sculptor
You can expend 3 sorcery points to use two metamagic options that are not already usable with other metamagic options on a single spell. You can still use additional metamagic options that can be used with other metamagic, such as Empowered Spell. You must expend the required sorcery points for each metamagic option.

One with the Weave
At 18th level, you learn to further expand your magical capabilities and expand the number of spells you can cast on a day. You learn to create spell slots of higher levels using your Font of Magic feature as shown on the table below.

Spell Slot Level Sorcery Point Cost
6th 10
7th 11
8th 12
9th 14