Late to the party, and BrokenMnemonic already gave a good answer. The only thing perhaps left to add are the Sarna policies:
The Sarna BattleTechWiki is an inofficial community project. Every BattleTech fan is invited to add or edit content within the scope of the wiki project.
That scope is determined via community consensus, and has led to the development of a number of self-imposed policies.
The policies most pertinent to this thread are (in no particular order):
- Policy: Notability, which basically states that anything to do with BattleTech warrants mention on the wiki;
- Policy: Canon, which clarifies that while Sarna cannot decide on what is canon and what is not, it assumes full canonicity of all products and information by default and highlights those that do not meet the official (CGL) criteria for canon;
- Policy: Images, which governs the use of BattleTech graphic art on the Sarna wiki and notably includes the caveat that Sarna is not an image repository (because of the limits of the Fair Use doctrine)
MWO may not be a source of canonical information (Hero 'Mech fluff nonwithstanding; see below) but it is an official BattleTech publication so it does warrant inclusion on Sarna, like all other BattleTech-related computer games.
Their altered 'Mech art was not a big deal. Side-by-side versus CGL's artwork, the MWO art is simply "wrong". That even holds true with the upcoming HBS game re-using the same wrong art.
However, both MWO and the HBS game seem to have a vast impact and garner a lot of attention among a wide audience. That may be reason enough to add their 'Mech model images to the respective 'Mech's article. It's not exactly high up on my own to-do list for Sarna; but every editor is welcome to take up the task. ;)
And finally, the Randall Bills statement about MWO Hero 'Mech fluff. He said that
here, as a side remark to a question I had asked but still as part of an official Line Developer ruling, and in doing so flat out declared MWO Hero 'Mech fluff canon.
That ruling was made when Randall was personally writing the fluff for most (all?) of the Hero 'Mechs, and it does cause some kinks in canon where said fluff describes a 'Mech that couldn't be built with BattleTech construction rules, or where timeline inconsistencies or anachronisms creep up. It's a bit of a mess, and a nightmare to accurately cover on Sarna.
The MOW Hero 'Mechs are actually one of my near future projects, once I get my "list of minor mercenary unit" articles done.