This would not effect optinrbf only fullRBF 

On Tue, 13 Dec 2022 at 16:00 Lucas Ontivero <lucasontivero@gmail.com> wrote:
Some wallets like Electrum would be affected by that because they use RBF to batch transactions so, outputs cannot be exactly the same as before.

On Tue, Dec 13, 2022 at 10:09 AM Daniel Lipshitz via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> wrote:
I dont think there was anything technical with the implementation and as far as I can tell this is well developed and ready.

The reasons I can find for not being adopted are listed here - https://bitcoincore.org/en/faq/optin_rbf/ under - Why not First-seen-safe Replace-by-fee 

 Those reasons do not seem pertinent here - given OptinRBF already exists as an option and the added benefit of continuing to be able to support 0-conf.

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On Tue, Dec 13, 2022 at 11:59 AM John Carvalho <john@synonym.to> wrote:
Why wasn't this solution put in place back then? Are there problems with the design?

While I still think there are unhealthy side-effects of Full-RBF (like more doublespending at unknowing merchants, after years of FSS protection) I think discussion of this FSS-RBF feature is worth considering.

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John Carvalho

On Tue, Dec 13, 2022 at 8:09 AM Daniel Lipshitz <daniel@gap600.com> wrote:
Thank you for bringing that to my attention, apologies for not being aware of it.

First-seen-safe replace-by-fee as detailed here https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2015-May/008248.html  by Peter Todd  seems to be a very suitable option and route which balances FullRBF while retaining  the significant 0-conf use case.

This would seem like a good way forward.



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