2. Raid content from beginning to end.
3. RvR action! You copy DAoC's RvR code line by line if you have too .. players need a reason to be out in the battle areas 24/7 .. protecting what is theirs! Keep and Realm relics that give your realm buffs when you have them, and additional buffs when you have the ones from other realms! I miss the old days of DAoC when your guildies would call you on the phone at 2am yelling "GET ONLINE! MID'S GOT OUR STRENGTH RELIC!!"
4. To hell with class balancing, this has gotten SO far out of control in the current MMO genere. Anytime a company boosts that they will try and maintain class balancing it always ends the same .. all tank, healer, and DPS classes end up being the exact same with different special effects, its sad really.
5. No customizable armor PLEASE! I like to be able to glance at someone running by me in town and know exactly what level that person was, and what content they had completed. I think it's rediculious that you can look like an end game raider at level 1 in most MMOs these days ... What happened to starting as a peon in rags and rising to a god-like state by end game in shiney matching armor? It should take time to look that cool.
6. Combat needs to be 100% smooth, when I hit a skill it needs to go off that instant (with the exception of some skills that have casting times, such as spells), not 3 seconds later because i need to wait for some kind of animation. LOTRO did this and their combat system was a flop .. they actually ended up revising the entire system about a year after release and its still too slow.
7. The Holy Trinity Works! To hell with the flavor of the month, this is an MMO, i want to tank, while my wife heals me and my buddies DPS.
8. Crafting needs to be beneficial but not to the point that it overwhelms the hard earned loot you get through either PvE, or PvP. The best way I have seen this happen is from crafting items that augment, or change your current gear in some way. I.E.: Blacksmithing could make armor plating to increase the defense bonus of plate and chain armor. Crafting skills like Alchemy have always been popular with the majority of players because they knew when they started getting raid gear that they could still benefit from the 10s or even 100s of hours spent leveling the crafting skill up.
9. Weapons and armor need to be Over The Top in design when you start getting to end game. Enough of this "realism" junk. People want to look badass, they want giantic 2 handed swords so huge it causes graphics clipping on the ground under their feet. I know this does not speak for everyone, but after nearly 20 years playing and creating games I feel I knowthe current culture well enough to speak for the majority on this issue.
10. World Dungeons. Open world dungeons give such an amazing sence of community, even if it may have negitive side effects sometimes .. those that played EQ1 may well remember getting a group of mid 30s together to venture into Lower Guk only to find every named spawn down there being camped by high level necromancers. It was not this way all the time, but it forced people to communicate, which in todays games you rarely ever have to speak to anyone. Hell in WoW you could easily go from level 1 to raid geared without ever typing a single word into your chat box.
There is my top 10, sorry if I upset anyone, I feel pretty strongly about TES series, and I am also an avid MMOer .. some of my views may seem strange to the younger MMO croud.