I'm sure not against another model if S&W sees a profit in it. However, I certainly wouldn't buy one. I had a G23 for some years that ended up in the safe because I couldn't carry it concealed to my satisfaction in light weight Florida garb, just too dang big. And for a house gun, why compromise capacity.
Also, keep in mind that the G19/G23 were introduced long before the smaller G26/G27 were introduced (which IMO were flawed by being as thick as the larger guns). Would Glock add the 19/23 to their line at this point? Who knows.
Personally, I think the M&P compact 9 and 40 fill the "need" for a somewhat larger carry gun than the Shield and going up to full capacity weapons from there makes a lot of sense.