It would be great to have a custom field that is a SUM of other number fields.
Example use case is for ICE or RICE prioritisation methodologies. Where we would have the following custom fields :
ICE score (Impact * Confidence * Ease)
RICE Score (Reach * Impact * Confidence / Effort)
We would then be able to order tasks in a project by that score to determine priority.
I realise this is quite a complex undertaking but if you don’t ask you don’t get!