Company logos change with time and many of them do drastic changes. Suggestion to be able to upload more than 1 logo as well as date input accompanying logos.
Also have a nice logo picture timeline where each logo has a 'from' and 'to' date associated.

Add Russia as region in release date. A lot of Russian exclusive games out there, and also those that do came out to the rest of Europe.

Pretty arbitrary, but I have an issue finding another Theme that properly catagorizes titles like Wii Fit or Dance Dance Revolution

Currently if you look at a series collection page, the main games, dlc and expansions are listed, but not standalone expansions.

Examples:
https://www.igdb.com/games/nostalgia-forte is not listed on its series collection page https://www.igdb.com/collections/nostalgia

https://www.igdb.com/games/far-cry-3-blood-dragon is not listed on its series collection page https://www.igdb.com/collections/far-cry

I think it is hard to find those stand alone expansions from the perspective of trying to find all standalone games in a series and would really like to have them represented.

As means of promoting game editing, there could be a game recommendation for the user. It would be based on the game pages the user visited, the games the user rated, etc. A notification could appear on the website with the recommendation, and there could be a place in "Karma hunters" for some more recommendations.
It would certainly help with many more game info missing, as the person would be prompted to help with something they most probably know.

Not a fan personally, but it might be worth documenting with a simple Yes/No Checkbox.

Ex. Jak & Daxter Collection PS3, Resistance 3, Uncharted 3, etc.

It's a distinct enough style of gameplay that it should be a genre rather than just a keyword.

There are alot of titles that seem to list multiple divisions as publishing arms for each region. While this can make sense for Developers like Ubisoft Montreal or Shanghai that are responsible for the creation of the game, it makes less sense for Publishers that serve as regional PR wings.

Ex. "Sega" vs Sega of Japan, Sega of America, Sega of Europe.

If a title is listed as an Episode (a game that continues a core story released in stages and/or uses the same game save data), it does not list the other Episodes in the series as Bundles or Expansions do. Currently, you can only link to a single title, and there is no means of stepping to the previous or next Episode.

Ex.
a) .hack//Infection Part 1, .hack//Mutation Part 2, .hack//Outbreak Part 3, .hack//Quarantine Part 4

b) Virtually all Telltale games.

Currently, if a title is stated to be an Expansion for another game, the Expansion appears in the original game's page. However, Standalone Expansions do not get the same connection, either in the base game or in their own page, even though the option to link them is in the Edit page of the Standalone Expansion.

Examples: MechWarrior 2 and Mercenaries, Uncharted 4 and Lost Legacy, Spider-Man PS4 and Miles Morales

https://www.igdb.com/games/mechwarrior-2-31st-century-combat
https://www.igdb.com/games/mechwarrior-2-mercenaries