admin can set site-wide default settings for user profile fields: Email display, format, digest, Forum subscription & tracking, use HTML editor, Screen reader

I am the administrator of a Moodle site using Moodle 2.2.6 (Build: 20121112). I'd like to change the default settings for the following user profile fields to be as follows:
Email Display = 2 (Allow only other course members to see my email address)
Email Format = 1 (Pretty HTML format)
Email digest type = 1 (Complete (daily email with full posts)
Forum auto-subscribe = 0 (No: don't automatically subscribe me to forums)
Forum tracking = 1 (Yes: highlight new posts for me)
When editing text = 1 (Use HTML editor (some browsers only))
AJAX and Javascript = 1 (Yes: use advanced web features)
Screen reader = 0 (No)

I see no reason why every Moodle site admin would want the default settings to be as I've listed above so I propose that a new page be created in the Site Administration area (perhaps Site administration > Users > Accounts) for site admins to set the default settings for these common fields site-wide. Obviously the default settings can be modified by users who have permission or when creating new accounts. I find it a pain now to create new user accounts and have to have these fields listed in each upload.

I read in discussion https://moodle.org/mod/forum/discuss.php?d=33370 that I could change the settings in /user/editlib.php (starts at ~ line 143). I'd prefer not to modify core code on my site as it is difficult to maintain with each upgrade and I think this issue applies to other Moodle users.

I've read in MDL-32627, https://tracker.moodle.org/browse/MDL-32627 that the default setting for AJAX is going to be as I'd prefer it as soon as I move to Moodle 2.3. What about the other fields though?