My plans for the foreseeable future are as follows:
I will certainly go on using slides;
I am considering adding colour negatives. I still have to make the first developments (my kit is still sealed). I have some 10 or 15 colour negative rolls to develop and examine.
I am attracted to negative film for the greater exposure latitude, and as a ready back-up in case slide film becomes too expensive.
I am deterred from negative film by the filtering issues and the scanning issues (noise in the highlights).
I plan making "film profiles" of each negative film before scanning. That requires shopping for a slide duplicator which I should do this winter. Until then my considerations regarding long-term use of negative films will be withheld.
I suppose in any case that slide film will remain my preferred medium and that negative film will be confined mostly to high-brightness-range situations.