I feel like there should be a general category for certain series. Such as Zelda, Mario, Megaman, RE, Digimon all under one catergory instead of individual games(unless they are a new). IGDB already implements this under what they call "Collections."

What do you think? People who play older titles but are a part of said series' community would be more in their line of audience. It's better than having them spread out in random places like Retro or Just Chatting. So instead of having massive communities around certain games, whether they are thriving or dying, you can have a continuous community around a certain series.

To build up our personal libraries on IGDB, we wouldn't have to manually search for and add each game. We could simply connect our IGDB accounts to our accounts on all of those services, and IGDB would automatically populate our libraries with the games that exist in our libraries on each of those retailers. Steam, for example, has a 'sign in with Steam' function that IGDB could implement, and we could use it to connect our IGDB accounts to our Steam accounts. Other game retailers have similar functions; that's how GOG Galaxy 2.0's integrations work.
This way, in IGDB I'd be able to create my universal game library more quickly than manually searching for and adding each game from each retailer, one after the other.
Furthermore, our universal libraries would include games that we have via subscription. For example, games from the Microsoft Store via Xbox Game Pass and games from Amazon via Amazon Prime. When we connect our IGDB accounts to our Microsoft accounts to sync our Microsoft Store games to IGDB, it would include games that we have via Xbox Game Pass. When we connect our IGDB accounts to our Amazon/Twitch accounts, games that we've claimed from Prime Gaming would show up in our IGDB libraries.

I was thinking about how to increase the amount of user reviews and interactivity between members and think this may be the best solution. Right now there is a section for recently reviewed games, but that doesn't seem to be showing user reviews? (Clicking on most items returns nothing, may be recently rated?) This would give more incentive to leave reviews which would appear on the front page for a short amount of time. Could be as simple as Game Cover art, reviewer name and rating, with a link to the game page, a more advanced method would be to link to the review itself.

The game bundle SEGA Mega Drive & Genesis Classics (https://www.igdb.com/games/sega-mega-drive-and-genesis-classics) contains a large amount of games on the webpage, but in the API only one game is returned, sonic:

'fieldsname, url, bundles; where bundles = (80185); limit 50;' https://api-v3.igdb.com/games
[
{
id: 3192,
bundles: [
4157,
7189,
20502,
20621,
22297,
46204,
80185,
86067,
96393,
99953
],
name: Sonic the Hedgehog,
url: https://www.igdb.com/games/sonic-the-hedgehog
}
]

If you pick one of the games listed on the web page as in that bundle that is missing from the API, for example Gain Ground, the web page for Gain Ground says it is available in the following bundles:

Sonic's Ultimate Genesis Collection, Sega Genesis Collection, SEGA Mega Drive & Genesis Classics, SEGA AGES Sonic The Hedgehog

But the API responds that the game appears in the following bundles:

'fields name, url, bundles.name, bundles.url; where name = "Gain Ground";' https://api-v3.igdb.com/games
[
{
id: 3129,
bundles: [
{
id: 7189,
name: Sonic\u0027s Ultimate Genesis Collection,
url: https://www.igdb.com/games/sonic-s-ultimate-genesis-collection
},
{
id: 20621,
name: Sega Genesis Collection,
url: https://www.igdb.com/games/sega-genesis-collection
},
{
id: 91043,
name: Duplicate SEGA Genesis Classics,
url: https://www.igdb.com/games/duplicate-sega-genesis-classics
},
{
id: 96393,
name: SEGA AGES Sonic The Hedgehog,
url: https://www.igdb.com/games/sega-ages-sonic-the-hedgehog
}
],
name: Gain Ground,
url: https://www.igdb.com/games/gain-ground
}
]