regarding a hypothetical comedy slice of life manga from wani:
while i am a big fan of the comedic and slice of life moments in the manga, i think they work so well because of their contrast with the darker, action packed battle arcs. they act as a much needed relief from the heavier content. especially since many of the characters are usually serious, stoic types (which makes sense considering the premise of the story), so seeing them in fun lighthearted situations make them much more likable. im not sure if a full comedy slice of life series from wani would be as enjoyable, especially since it won't have the characters from kny that we already know and love, but i wouldn't particularly mind if they went that route.
personally, i would much prefer to see wani stick around with the kny verse for a while because there's so much more that could be done with the characters. i still firmly believe the series is ending too soon. i think wani should do some miniseries or spinoff's about some of the pillars. or they could do some 4-koma stuff and maybe have that as the dedicated back of the magazine slot lol. maybe even more stuff set in the kimetsu gakuen verse. those special 4-koma wani drew a few times were pretty cute and funny.
if they went with a new series, i would really like to see a spokon, or even another battle manga like fantasy adventure. something where wani's fun character writing can really shine through.