Templates could be a great way to help folks with citations, especially for folks where understanding wiki markup doesn't come naturally. Using EE, we could certainly come up with templates for books, Ancestry (trees, photos, collections), court records, census records and all sorts of common record types. We could start with the quick start guide examples.
On the other hand, if someone is going to call themselves a genealogist and create/edit profiles on WikiTree, they have to be willing to meet the burden of proof (just like on Wikipedia) for every entry by providing correctly written sources. This is a skill we all have to learn whether we research our genealogy for a hobby or for a profession. Just like you have to learn biology to get into genetic genealogy, you have to learn to source your claims for the profiles on WikiTree to have any real value.
I think that a sourcing mentorship would go a long way in helping new members and there could be some sort of badge that has to be achieved before a member can create/edit profiles other than their own (be more like Wikipedia that is permission based). We need to ensure that burden of proof is being met to make WikiTree more like a true Wiki, and not like Ancestry or Family search trees (full of made up trees).
Besides, even if it's only for our own benefit, when we revisit a page more than a year after first creating it and we don't cite our sources, we end up have to reprove the data to ourselves! And that is wasted time in a field that is already very time consuming.