It's a no brainer really.
Thank goodness it isn't taking well over a decade to get a sequel,... like SOME dungeon crawlers I know who will remain nameless. http://kotaku.com/5604215/torchlight-ii-coming-spring-2011
Customizable Characters â€“ Players create and customize a character from one of four classes available and choose an animal companion. Through cosmetic, class, and gender choices, skill path decisions, and the treasures they acquire, each character can be custom-tailored to each player's needs.
Moddability â€“ Torchlight II will release with an updated version of TorchEd, the Torchlight editor. Players have the option to create their own mods, adding even more content to the world. You and your friends can download the same mod and play together!
New User Interface â€“ Torchlight II boasts an entirely new, improved user interface, designed to be easier than ever for new players to pick up and play. Thanks to this intuitive interface, players have immediate access to a rich and varied world, with little experience necessary.
Overworld Areas â€“ Torchlight II has large randomized overworld areas to explore with weather, time of day cycles, and random events that provide players with even more content to experience.
Random Dungeons â€“ Delve into randomly generated dungeons within the game at any time for extra experience and rare loot. Dungeons in Torchlight II have even more branching paths to explore with friends filled with random events, rewards and dangers.
Retirement System â€“ Once characters are sufficiently leveled up, they can "retire" and bestow specific benefits and perks onto new characters.
The Overworld Areas sounds awesome. Torchlight needs to get bigger.