If anything, things have become less complex. Nowadays, you get higher update rates, so good prediction becomes less critical - and things get simplified a lot.

If anything, things have become less complex. Nowadays, you get higher update rates, so good prediction becomes less critical - and things get simplified a lot. A lot of the complexity of the network/game engine code in Q2/Q3 and derivative games (like Warsow) was dedicated to network prediction.