I suggest simplifying the Missions section and if possible that each entry be minimized to one or two lines only. The Missions list is going to be long and putting unnecessary information together with it will make it look complicated after some time. We can instead just list the missions and each links to each own page. Individual page can present a more thorough information for each mission. It can contain the following:

1) Mission Briefing. Putting this information on the Missions section will make the list look much bigger than necessary.

2) Requirements - level, race, energy, number of missions completed, a specific mission completed in a series, an item from an NPC, number of kills/hacks/battles etc., not being disabled, adequate stats scanning/attack/defense etc., legion size, credits, minerals, special items exotic matter/political favor etc., amount of planets scanned, planets occupied etc. etc. etc. There are probably much more that I haven't mentioned.

3) Rewards - just like requirements can be very varied, mostly exp points. We can enter here the reward for each attempt at the mission but also put a reward that is obtain after each completion.

4) Risks - most missions have none but should be mentioned if there is.

5) Mission Summary - Here we can put the total requirements necessary for each completion and the total rewards obtained. Also, a summary of mission completion - including all the requirements and rewards for all completions. It is important to mention here that the numbers may be variable if there is a possibility of random rewards or random failures. In some missions, extra credits are necessary to repair ship when it gets disable and some missions take extra energy randomly. It is also important to mention here if the mission has no end and just loops and doesn't count towards completed missions credit.

6) At the bottom we can indicate the previous mission if it's a series of missions and the next mission in the series if there is one. This will also serve as a link to that mission.

7) We can also include the picture icon for that mission in these pages if we're allowed to use images from the game.

Example page:

The Slave Revolution
_________________________________
Mission Briefing
Astounding. The planet is a slave world under the control of a powerful unknown race. Before we discover who these powerful beings are, we need to find the shield generators and bring them offline.
_________________________________
Requirements: 50 energy, complete mission '???', level ?
Rewards: 600K cr (on completion), 160 exp
Risks: Potential for generator explosion (medium damage)
Mission Summary:
10 attempts/completion = 500 energy, 600K cr, 1,600 exp
5 completions = 2,500 energy, 3M cr, 8,000 exp
___________________________________
Previous Mission: ???
Next Mission: ???

From this example; I haven't taken note of the level requirement and the previous and next missions. But I'm asking around and continually updating my notes. Under the 'Risks:' part is 'Potential to Obtain:' part but since there is none, I deleted it.

Somebody created a page for ranks, we can update the page too by adding mission links for the levels they become available.

Is it a good idea to add mission chains and race-specific missions as individual pages? it will make them easier to identify.

Yes, I think it is a good idea to create a page that lists race specific missions. From there we can find out if some missions really are race specific and edit accordingly. Some missions I suspect really are not race specific but only mentions whatever race you've chosen but some are definitely race specific such as the Konqul and Aerlen beginner missions.

We can post a link for it at the bottom of Missions page as Related Topics.

I like the idea of having the list that can be sortable (for the reason I posted earlier) but I do also like your idea. I wanted to add a picture to one of them but there was no way I could find to upload one and it would just mess up the space.

I thinking link what is on that list to a separate page that has some more details is a good idea, especially when it tells you what you need to open it and what it opens when you complete it!