Only addition I'd maybe like to see is the number of weeks since release alongside game titles - we all know that some of the DS games have crazy legs but could be nice to see how crazy.
Like (with some complete guesses at the number of weeks and one suggestion of a possible format)
TH/LW #W FMT TITLE - LW / LTD
01./00. [001] [PSP] Final Fantasy Tactics: The Lion War (Square-Enix) - 154,891 / NEW
02./01. [003] [NDS] Final Fantasy XII: Revenant Wings (Square-Enix) - 38,003 / 421,333
03./03. [030] [WII] Wii Sports (Nintendo) - 30,180 / 1,573,776
04./10. [078] [NDS] More Brain Age (Nintendo) - 27,930 / 4,266,115
05./08. [052] [NDS] New Super Mario Bros. (Nintendo) - 21,332 / 4,440,924
06./02. [004] [WII] Super Paper Mario (Nintendo) - 20,670 / 330,851
07./05. [026] [WII] Wii Play (Nintendo) - 20,498 / 1,299,628
08./07. [003] [WII] Big Brain Academy: Wii Degree (Nintendo) - 20,063 / 117,487
09./09. [003] [NDS] Momotarou Dentetsu DS: Tokyo & Japan (Hudson) - 18,547 / 143,189
10./04. [016] [NDS] Yoshi's Island DS (Nintendo) - 17,423 / 808,555
The format is very good as is though and maybe adding this extra stuff will just clutter it up