Why there are so many different basepoint in lightning network?Here are the scripts found in BOLT 03.
Offered HTLC Outputs:

2nd stage output script:

Why not just use one pubkey, like localpubkey?
Source: Why there are so many different basepoint in lightning network? (https://bitcoin.stackexchange.com/questions/112701/why-there-are-so-many-different-basepoint-in-lightning-network)