LNHANCE is a proposal made up of CTV + CSFS + InternalKey

Pros:

-It's the most conservative and well reviewed with lowest risk of unexpected features (in contrast to CAT)

-Scales throughput on L2 by enabling Lightning Symmetry (Eltoo) so we can have non-interactive / cold channel construction

-Scales custody on L1 with certain forms of UTXO sharing like Ark and Timeout Trees

-Gives you most of the features of OP_Vault

Cons:

-Complex to understand and implement, but so is the LN and this isn't more complex than that

-Unknown unknowns, but by definition all upgrades will have this

Read more:

delvingbitcoin.org/t/lnhance-bips-and-implementation/376

bitcoincore.reviews/bitcoin-inquisition-45

See who supports CTV:

utxos.org/signals