This deck is pretty fun and pretty tight.
Was reading here https://mtg.fandom.com/wiki/Extended_U/G_Madness_deck that "[t]he original deck design came out of Odyssey block constructed and has been transferred from there with next to no changes i[n] cards." => So I like this deck as is and won't change.
People played Threshold too... See here https://www.mtgsalvation.com/articles/16289-a-history-of-ug-madness-and-what-to-expect ... 4 Nimble Mongoose, 4 Werebear... Is 4 Yavimaya Coast from another time period? 3 Seton's Scout... 2 Genesis, 4 Mental Note... Breakthrough... Article says Madness is stronger than Threshold though...
I'm trying to look at what sets I own the most from, and then check decks from those time periods.
https://mtgtop8.com/event?e=9242&d=253057&f=BL -> This comes from here.
Google mtgtop8 block decks 2002.
Sets I own the most from are 2000-2003 mostly. Then some 2006-2008.
1999 and before to 2002 is mostly from Doddi. 2003 is Mirrodin so then I played more. Then 2006 Time spiral and 2007 Lorwyn, 2008 Shadowmoor.
Yavimaya coast standard legal 2002... See Nizzahon's youtube video on history of madness decks... change deck yo standard, use Yavimaya coast...!!!!