The real question is: what can be easily added to the interface.
On my equivalent Excel file that I have made, the extra things I keep track are:
- What I have and what not.
- I have a column with quest order.
- It doesn't really mean I will run the quests with that order but it gives me a guide for which quests to go next.
- It also groups nicely Chains, Sagas (I haven't marked saga's but I should and will add a column In Saga)
- I have an Acquired At column that clarifies at which public areas are some buildings (like taverns etc.) otherwise it is the same with the extended property in at the Adventure Compendium.
- I have favor value, not favor earned and I have also marked some milestone favors like inventory
The reasoning of marking the f2p quests was to make it easier for grouping with new players. I often bring friends to try the game with new f2p accounts and after Korthos/harbor it becomes a bit chaotic.
I do not know if it would be easy to implement a [default/suggested] quest order from the game but I'm certain it would have use and should emphasize on story telling imho!
Also, having f2p somehow marked it would be convenient. Now I check my own file but having on a look to figure out that on lvl 14 f2p is only the tower of frost has a use.
Implementation wise I would give different line formatting:
f2p
owned
not owned (I would not remove them)