yes in that instance its very useful. Perhaps with channel factories we can lower the onchain costs further. Rebalancing can be done for zero cost, it's usually one of the first steps after forming a liquidity swap over at lightning.plus

Jarfi

Rebalancing is pretty costly in my experience and also covers a different use-case than wanting to resize a channel. Resizing a channel allows me to maintain the balance I have with my channel partner while potentially adding new funds to send them. I could have a .5 btc channel and want to make 1 btc payments. Adding 1 btc to my channel is the only way to make that possible while still having capacity for regular payments as well. I personally think it's a huge improvement to what we had before

netstatic

bitcoin

Reddit - splice usage reported

all good points, but rebalancing would still be cheapest if you're just looking to inject more liquidity to an existing channel 