Every year I am hopeful that a few key games from the likes of Konami (Castlevania, Silent Hill, Vandal Hearts reboot or remaster, etc.), Capcom (Mega Man (X) sequel or reboot, Dino Crisis reboot or remaster, Devil May Cry sequel, Lost Planet reboot, Final Fight reboot, console port Recent Monster Hunter, etc.), SNK (King of Fighters, Samurai Showdown, Fatal Fury / Garou 2, etc.), Square Enix (FFVII remake, new console Secret of Mana, Seiken Densetsu 3 localisation, etc.), FROM (Bloodborne 2, Otogi reboot / sequel, new IP, etc.), SEGA (new 2D Sonic, Shenmue 3, Taxman Sonic 3 & Knuckles, Skies of Arcadia something, Panzer Dragoon something, Jet Set Radio something, Outrun sequel, etc.), Sony / Japan Studio (Tokyo Jungle 2, Trash Panic 2, The Last Guardian, Legend of Dragoon reboot, etc.), PlatinumGames (anything) or an out of left field game like a new Shadow Hearts, Grandia or a Japanese indie game will be announced at TGS and instantly make me believe in the relevance of TGS again for me as a western, old school console gamer, but quite often I end up getting disappointed for the most part.
That said, I can't help but feel hype each year in the days leading up to it. Having hope is better than nothing I guess.