I've been brining this up for almost a year. It's a miner setting, doesn't need a fork. https://jasonc.me/blog/chained-0-conf-transactions-memo
All miners need to have the same setting in order to not get their blocks orphaned. FYI Bitcoin.com is working on a spec for this. I think during Nov upgrade this should be fixed.
Is the plan to just roll back Core’s limit at the next upgrade like it never existed, or is there more to reverting the limit?
The BCH Devs talk about this limit here:
Or maybe in the one before or after this one. Not sure which one and I won;t listen to them again now.
And to answer your question, yes, it's not as easy as we like to think! There;s more to this than just turning a 25 to 100.
