My gaps are roughly the same as they have been between clubs as they were 15 years ago, despite the lofts being completely different. I don't understand how a different loft setup causes you to be between clubs more often unless the gaps get bigger between clubs, which I haven't seen.
The gaps are the same, just different labels stamped on the irons. My first 9iron and PW were 46* and 50*. We now call those PW and GW. In fact many of today’s Pitching wedges have less loft than my old 46* 9 iron.