I do believe that we should mainly be voting for things to be done to the core software that cannot be done by API, Dynamo or Add-ins - as those things can be done quickly by others (or yourselves).
Here are some of the better ones that I think should be voted up (including some that I have posted):
Please go to the Revit Ideas forum and vote for any of these ideas that you agree with:
Model Stability (& Pins)
Allow us to change 2D extents of pinned sections - just like we can for grids and levels. Then we could leave those sections pinned all the time and not risk losing attached annotation.
Persistent Pins - pins that reinstate themselves after you have modified the element once
#1 wish regarding parameters is to allow Shared Parameters in Key Schedules - this would unlock so much potential in Revit, and the API just can't get in there to solve it.
There are several outstanding Global parameter requirements:
The first is oh so simple, but would be a huge deal for us:
Enable global parameters to associate to Floor ‘Height Offset from Level’ system property
Enable global parameters to associate to Array Numbers
Enable creation of an Area Reporting Parameter for use in Global Parameters
For more detail refer to Global Parameter wishes
Stairs & Railings
There are so many things that need to be fixed on stairs and railings, that I have created a list of requests just for Stairs and Railings.
There are a couple of basic ones that just need to be done to improve stair arrows - not much more than bug fixes:
FamiliesAre you intensely irritated by the default setting for face-based family placement being 'Place on Vertical Face'? I think that 99+% of users would like it to be changed (not to mention BIM managers who have to deal with confused users not understanding why they can't place ceiling fittings).
Vote her to make the default 'Place on Face'
Form CreationCreating forms in the Conceptual Massing Environment is fraught with problems - some of them could be alleviated by the following two capabilities:
Control profile order during form creation
Select Path during form creation
There are oh so many more things that need to be fixed in Revit - but since Autodesk concentrate on such a few, we need to target which ones would genuinely benefit the most people. And we shouldn't ask Autodesk to spend time on things that can be done by some other means (API, Dynamo etc).
Have a look at the latest updates to the Autodesk Revit development roadmap to see what is planned or has been recently delivered.