I had a great deal of fun during Urza Block but it actively hurt the game of Magic. It ruined Standard for months and months while simultaneously shitting on all of the other formats it was legal it. There was an entire season of block constructed that forced a bunch of bans and then forced a bunch more bans up and when we finally got to the Pro Tour itself the top 8 was like 7 R/U Wildfire decks + one Fluctuator. High Tide got discovered and combined with Academy that was the end of Legacy. I started playing Jar in local type 1 tournaments and had a legit chance due to just how broken it was having multiple copies of cards like Yawgmoth's Will, Frantic Search, Tinker, and Lotus Petal. People with Power did not like how close those games were.
Had fun, fond memories, but those sets should not have been made.
Kamigawa was at least followed by Ravnica and then Time Spiral. I really,reallylike those two blocks. Tenth Edition the best core set Wizards has ever released and it came around at that time as well.