Calendar:Improving the Calendar Views
Current Issues (Lightning 0.3)
The table below lists users feedback regarding the usability of the main Lightning UI.
Issues:
- The calendar below the email accounts is disturbing and to big if you also use the "contact sidebar" extension.
 - After starting Thunderbird I don't know in which calendar I'm working in.
 - I can't drag an event from one calendar into another.
 - All the different colors in the week view are confusing me. Especially same things are highlighted differentially.
 - I want to switch between E-Mail and Calendar easily.
 - Why am I seeing the mail tree when I'm working in the Calendar?
 - I don't want to see Saturday and Sunday. I use my calendar only for my work.
 - The left side looks very cluttered.
 - How can I switch into a different view?
 - I have 3 calendars. One for work, the other are subscribed ones. Which means that I don't have write access on these. I don't know how many times I tried accidentally to create an event in one of the read only calendars.
 
Proposal
Most of the issues stated above can be fixed by focusing on the following areas:
Rearranging already existing UI elements
At the moment, Lightning 0.3 combines very important information on the left hand side. From an users point of view these are:
- Access to the E-Mail account (Mail Account Tree),
 - a Calendar (Mini Moth),
 - an Agenda List (Agenda Tab),
 - a Todo List (Todo Tab)and
 - a list of Calendars (Calendar Tab)
 
The problem with that solution is that 70% of the visual information is placed on 30% of the screen.
Depending on the task users want to fulfill, each element of the left hand pane has a different importance level.
For the tasks "Write or Read Mail" the order could be:
- Mail Account Tree
 - Agenda
 - Mini Month
 - Todo
 - Calendar
 
For the task "Create Event" the order is different:
- Calendar
 - Mini Month
 - Agenda
 - Todo
 - Mail Account Tree
 
To reduce visual clutter I'd like to propose to split the Mail/Calendar pane into two separate parts.
- One pane which focuses on mail reading/writing,
 - the other on calendaring.
 
The table below lists the items of each pane:
| Mail Pane | Calendar Pane | 
| * Mail Account Tree | * Mini Month | 
| * Calendar Subscriptions |