Maybe someday, yes I agree. It's hard to gauge future demand although thankfully greater availability of any model creates its own demand as I have said before. The question would be whether production would be economically viable and whether the loco would have competition.
If 141s became available in the morning I probably would not rush to buy them if I had to compromise on what else I had to purchase... 17 A class variant liveries to choose from and a dozen 121 class would be way higher on my list.
Easy for me to say I have sufficient 141/181s which took me quite a while to acquire second hand after they had 'sold out' many years before.
Would I like to see a new 'second generation' 141 with lights sound, speakers better access while retaining all the fine running characteristics, .. sure!
Say they were available, but there was also CIE/GNR railcar several liveries, possibly intermediates coaches, some laminates, PRs, maybe rtr GSR/CIE steam loco, I still hold off on a new batch of 141s unless funds were unlimited.
Now, there are others out there that may have just come to Irish modeling even more recently that don't even have a single 141 and would like a bunch. When the original 141s were produced there much less rtr 'competition' out there. I don't think that is the case in the golden era of Irish modelling.
Anyway, production is way above my pay grade, so as you say, I'll leave it to MM, IRM and others to figure all that out. Anyone else who wants to jump into the market, sure, go ahead if you've done your research i say