I see no inherent nobility in being an individual who prefers to do things with others, which you are exalting here by giving them preferential treatment in return for their social co-operation, as already they are benefiting from this by the ability to accomplish more and the satisfaction that they get by this social interaction. "People needing people" is not actually enjoyable at all for those people who prefer to be more self sufficient. Perhaps these people who prefer to accomplish things on their own without any dependence upon others are actually more together within themselves than these social ones who have some "need" to interact with others to find similar satisfaction.
So here with this post you make *alts* the target when in reality you seem to want to punish the individual who prefers to do things alone by either removing alt assistance or giving some sort of preferential benefits to social groups and activities. This just seems unfair and controlling to me in that you seem to believe that socially active people are the preferred playstyle as a reflection of your and societies way of life. People are different and should be who they are, be they loving to do things with others or preferring to mainly do things on their own; thus, the game of Wurm Online provides all with their own choice of gameplay depending upon ultimately their own personality.
Fortunately this game offers more freedom of choice than RL where societies dictates either subtly encourage pursuing common goals and interaction with others or blatantly enforce it with their confining rules and punishments. The "loner" types are then looked down upon or with suspicion by those social types who simply can not comprehend why anyone doesn't think as they do about the delights of interpersonal interactions. I don't think that the game was specifically planned out to give each individual the choice as to how they prefer to play it but this is the way that it has turned out and my preference is that it remain that way with acceptance of these diverse styles of playing it and ultimately allowing people to be who they are without the judgement and needs of others interfering with it.
If alts are abused in some certain instances then those should be dealt with and alts remain as useful for other "less sociable" purposes. Mainly I see no problem with them and feel at ease about letting others play the game as they wish as far as social interactions are concerned.