I think Lotro is great game that holds up well to its newer competitors in many ways. Not in the content and mechanics related to kinship/guilds imho.
It's probably been discussed over and over in the past, that other games provide alot of fun guild stuff that lotro doesn't have. I am thinking of
- kinship buffs
- kinship banners, cloaks or tabards with own design
- kinship progression after 10 through:
-- kinship quests
-- kinship deeds
- more kinship titles/ranks

In my opinion as a social kinship kinda guy, having a few of these would improve the game much more than a new instance or two.

Believe these are old ideas, what do you think about it?