The Views module has trouble working with some date fields (see e.g. https://www.drupal.org/node/2360705 but there are other examples as well). To solve this there is the View Date Format SQL module, but this module has become at least partly useless due to changes in the Date-moudle. The maintainer of the Views Date Format SQL module has no plans/time/need to remedy this.
In the Views issue queue Merlin of Chaos has said that this is something that should be changed by the developers of the Date module (https://www.drupal.org/node/2220107 ). You no doubt have a lot on your mind, but is this a problem that is likely to be solved for D7 by the Date module?