In 2004, Iwasaki Hiromi released a special box set to commemorate her 30th Anniversary. I think the concept of that box set ("Hiromi Iwasaki 30th Anniversary Box") is one that Akina might consider as she marks her 25th year.
The set features 7 CDs of re-mastered recordings and 3 DVDs of video content. All of Hiromi’s single A-sides as well as a selection of B-sides and albums tracks are contained on 4 of the CDs. The other 3 CDs include a collection of favorite songs (fan requests), an assortment of rare tracks (duets, etc.), and a live best selection.
The DVDs feature a concert ("Pyramid Live"), promotional videos, and a selection of TV performances, including rare "Star Tanjo" clips.
The discs are housed in a nice box and accompanied by a booklet containing photos, discography, and other information.
Not to knock "Best Finger"; I just think Akina’s 25th year warrants a lot more. It would be great if she has a release along these lines!