Not one person who is willing to say what they actually develop has weighed in on this, so you don't have much to go on at all. But doing a great app for 55% which will be 95% in a few months as people upgrade is a lot better than doing a mediocre app for 95% now that will still be a a mediocre app for 95% in six months. Getting recognition on the app store is essential if you want to make money, and mediocrity isn't the path to get it. You need to support the latest features that apply to your app.That's because Pages, Numbers & Keynote all support the new hand off feature in OSX10.10 & iOS8.
If you don't need to support a new feature of iOS8 then why limit your potential customer base to 55%?
You proclaim great knowledge of development but you don't demonstrate it in any of your posts here.
Dude, this is the MR forum- you need to expect a polemical style. Most of the posts here are total crap. If you want decorum and insight, go to Ars Technica or Stack Overflow which actually punishes people for worthless posts.I trust him better than someone who adds no value to forum discussions, no interesting insights, personal experiences, original thoughts or views. Ask yourself why every one of your posts is an attack on other people. That tells us a lot about you.