The folks at Vanguard have posted a series of developer answers to community questions.

Will you consider to revamp Karax and Varking since no one is killing them? Maybe make them both lvl 55 targets?

No plans to revamp them as of yet. We have made an adjustment to Varkings add casting that should make him a little more possible.

Are you considering implementing another Class Lead system, or a different way of improving class balancing and fixes?

Do not have the resources to manage a class lead system and we do not want to deal with the issues the last class lead system caused.

Will we ever know how much our total XP is w/out requiring a UI mod and how much XP is needed until next level? Like 43176/64823xp?

Possibly but not really high on the list.

Read more here.