Better support for periodising information in relationships

As a solution developer

I want stronger support for/a better user experience around periodising information in relationships.

So That I can more easily set up time (e.g. epoch) dependent configurations in MooD.

Benefits: Better/less cumbersome working with timed/periodised information. For instance (in the case of MODAF/NAF) Capability transformation time lines is fairly easy to represent graphically by dropping elements onto a model, but much harder to to implement and query as a data structure. Same goes for other things that might change through time, where keeping the history of what "has been" would be useful.

This might tie into a "baselining and versioning" story.

Acceptance Criteria

1. Mechanisms which allow a smoother way of creating and manipulating "timed" relationships (maybe in a similar way as is done with epoch-enabled measures, although those are not super easy to work with either). I understand and accept that logics around these kind of constructs is always likely to be a bit cumbersome (in matrices and queries) and what I am asking for is mostly to do with creation and manipulation - e.g. creating new relationships, changing the time portion of those relationships
2. Visualising these kind of relatinships in charts (X was part of Y1 up until date D1, then it became part of Y2 until date D2, etc.). Being able to look at a set of "things" and seeing what's happened to the entire population in this way would be very helpful and right now, I cannot think of a way visualising this in MooD (outside of dropping elements on a model, but that's not very dynamic if someone chages dates or new relationships. Extra bonus goodness would be to be able to drag, click and manipulate date from these visualisations (where applicable)...

Customer / Originator LFV

Priority Mid/High (is currently fairly constrictive in our solution building and restrains us from progressing some interesting ideas)