This http://www.tip.it/runescape/?quest_calc but for tasks would be awesome.

http://runescape.wikia.com/wiki/Tasks

 

I usually do tasks in sets (aka finish all of the easy/medium/hard/elite together) so I just use that.

You can click on the specific city's tasks that you want to finish in mind then check out the requirement for easy/medium/hard/elite

Doesn't the in-game task list kinda of do this for you?

It shows padlocks on tasks you cannot complete.

I've moved this to a more appropriate forum :)

This http://www.tip.it/runescape/?quest_calc but for tasks would be awesome.

 

As Sy says, you can already get a nice overview of which tasks you can and can't do in game. Us having a similar system going on would only be useful in the rare case where you can access tip.it but not RuneScape. Taking into consideration that implementing this would take a huge amount of work (there's a lot of tasks, after all) and would in the end be helpful to very few people, we'd rather spend our resources working on other features that are beneficial to a larger part of our user-base.

 

http://runescape.wikia.com/wiki/Tasks

 

I usually do tasks in sets (aka finish all of the easy/medium/hard/elite together) so I just use that.

You can click on the specific city's tasks that you want to finish in mind then check out the requirement for easy/medium/hard/elite

I too find that I tend to do tasks one set at a time. The wiki, as well as our very own task guides, provide an overview of the skills and quests you need to complete a certain task set :)