The "manage your mortgage" web site from Ulster bank shows the end date for my fixed rate. I think I also saw it on the paper statement that I receive once a year, but will double-check.
I am irritated that this doesn't seem to the norm to be honest.
But OTOH, most of the Irish banks are not exactly competent or customer focused.
I don't think that they would implement something like this on its own. The need for issuing consultation papers and revisions to the CPC would not justify it.
But when there is consultation on the next version of the CPC, it would be another opportunity to suggest it again.