CISA?

Wondering about cisa (cross input signature aggregation) and how much it would reduce the cost of transactions in the future. As I understand it, it allows for multiple input transactions to only need 1 signature.

Would this potentially allow users who forgot to consolidate utxos to spend small amounts of dust?

Alternaticely, another cool feature Ive heard is that conjoins might become even cheaper than a regular spend in the future, incentivising more conjoins which increase BTC fungibility.