Should rihanna release a greatest hits album after her new release, when should other artist release one too?

rihanna has 20 top 10 hits 17 of them are as the lead artist and 10 of them are no.1's but 8 of them are as lead artist as well. and this is her 6th album in 6 years. she tends to like release something every year and i think next year or the following year she should release a greatest hits collection. she already has the hits and she could make her fans buy the greatest hits collection.



madonna released one just 7 years into music. also released another collection that was ballad oriented. another one for her 1990's hits although vogue wasn't on it, it was on her immaculate collection her first greatest hits album. then released her most recent one which is a collection of all her hits from her early days to today (2000's).



mariah carey released one just 8 years into music. not all of her 90's hits weren't their. but all of her hits were on her 2nd greatest hits album which was released 3 years later and released probably because of her failed album glitter and probably wanted that collection to make up for that failed release of glitter.



janet jackson released one in just only 10 years of her success and 13 years into music. then, released another one most recently and is on tour for her no.1's album.



beyonce could release one pretty soon as a solo artist and she released one with destiny's child who had 10 top hits and 4 of them no.1's. she has as a solo artist like 14 top 10 hits and 12 of them solo.



pink released one last year after 10 years into music. she released two new ones and they were hits. she had 9 top 10 hits and 2 of them are no.1's, but add two and its 11 now!! and now has 3 no.1's.



artists that are too soon are lady gaga is too soon but she has 11 top 10 hits 3 of them are no.1's. gaga could probably release one after her 4th or 5th album. right now born this way is her 3rd album.



katy perry is too soon as well she 8 hits and 6 of them are no.1's. katy only has released two albums.



britney spears has released 2 greatest hits albums. one in 2004 in just 6 years but didn't have enough hits and released one in just 11 years but still didnt either. britney should wait until like the 15 or 16 hits she gets so far she has 12 top 10 hits 5 of them are no.1's. but minius one because she was a featured artist in the s%26amp;m remix with rihanna but it still counts as britney spears hit.



what do u think rihanna should release one into 7 or 8 years into music?



when should the other newer artists release a collection of their hits?Should rihanna release a greatest hits album after her new release, when should other artist release one too?
I think she should.and if hers is great then they should wait a little before they release theirs