In case of bitcoin this should give the user 50 minutes the time to issue the undo transaction, after the 6th confirmation of the original transaction it is no longer possible if the undo transaction was not included in the 2th, 3th, 4th, 5th, 6th block since the original transaction, being the 1th block.
Don't you think that if this is implemented in the bitcoin network, it will give some people the room to malicious undo transactions which can pave way for double spending and hence create confusion in the network.
You are trying to destroy one of the unique attributes of bitcoin as I learnt, i.e irreversibility. This feature makes bitcoin fit for ai and machine integration in the future.
Edit: Just noticing that pooya87 has said similar thing above.
I think the opposite logic could also be used, it gives people the chance to recover from malicious events, like people realize they got scammed, by for example sending small amounts of bitcoins to rich bitcoin people and these addresses end up in their wallets and they send to the wrong address because it was a smaller address, for example:
ert45345...3453453
ert45345...3453453
^
A known attack where some wallets don't display all digits and the ... contain the scammers address.