It suggests that more action is expected beyond what has been mentioned.

Underlying Expectation

Used more in casual conversation rather than formal or written English.

Casual Tone

Implies a hint of doubt or skepticism about the situation being enough.

It often prefaces an acknowledgment of practical challenges in real-world scenarios.

The phrase can contrast an idea's appeal in theory with its feasibility in reality.

It can signify cautious optimism about an idea that has yet to be tested.