Or you can bring two groups and kill him. Old world progression is an absolute joke. I cannot stress enough how much easier everything is due to all of the changes to the stat system. One grouping VP? Clearing plane of sky at level 50? Killing AOW with 0 deaths within an hour of Velious opening? One shotting every raid mob you face all the way through PoP?
The group game is no better. One group can kill every frog from ghoul lord to executioner area. (That's every blue mob in that half of the dungeon, if you recall) 26 minute respawns are an eternity with the dps you put out now.
The general differences vs classic are - everyone does more dps, tank classes will max mitigate nearly every hit, all spells are more mana efficient, there are no fizzles, no enrage, your spells resist less often, pets are insane, you can partial resist certain spells that used to be all-or-nothing, and probably some other stuff I'm forgetting.
This is mostly because stats have a greater effect and pre-soft capped AC is higher across the board. The whole stat system was revamped for TSS, which features an entire new level 1+ game where everything hits MUCH MUCH harder than classic, but drops much better gear as well. The game is now tuned for shit that triple hits for like 400 by level 40. The idea being to smooth out the retarded jump that occurs in Gates of Discord where suddenly zone trash hits like Plane of Time bosses.
So anyway, when you are asking for "five years for each expansion!", bear in mind the game you will be playing. A game where there are HUNDREDS of people who can easily kill Nagafen, and thousands who can camp the Ghoul Lord.
A game where you will literally be sitting in one room waiting 25 minutes for the next round of mobs to spawn because that's the only thing that isn't camped.
You know what you should be asking for? A server that starts at PoP, for people who won't want to be bored to fucking death by a trivial joke of a game. Because I seriously doubt they are going to re-tune the entire game to make it into something worth playing.