To be successful- NO it does not. Android apps are not needed. Microsoft needs to build a unified OS that is appealing to developers. Build once play every where. If this happens with W10 then we'll see the apps to coming. I don't think it's going to happen quickly just because MS still has an image problem with younger people.
I will point out a couple of my thoughts. First, I think the UI change I'm seeing in W10 need to be universal to the phone as well. It's my belief the phone needs a UI change or update. It has now been what-- 4 years now and the UI is still the same. The simplicity of the get in and get campaign in the beginning no longer works. It now makes the OS look basic. Secondly, the start screen. Tiles need to go, and get back to icons. As far as the phone version of W10 goes. The tiled start screen should be an option. I say this to answer the question of being "successful" if we are talking selling more handsets. Familiarity is the biggest key to me. People want a similar experience when they change OSes. Switching from iOS to Android is much more palatable for some users. Mostly because the mirror each other with their start screen and icons (android start screen being more open). Visually to me its very familiar with icons and background picture. I think people will switch if they know they'll get a similar experience. IOS and Android app are visually similar too. This just makes it easier to switch. While using the same apps on WP can be a different experience. This is why I believe people don't chose WP. Similar (not the same) experience, then its easier to switch, more people switch, then more apps come. Tile are better for tablets. Icons & widgets for phone and PC
I will point out a couple of my thoughts. First, I think the UI change I'm seeing in W10 need to be universal to the phone as well. It's my belief the phone needs a UI change or update. It has now been what-- 4 years now and the UI is still the same. The simplicity of the get in and get campaign in the beginning no longer works. It now makes the OS look basic. Secondly, the start screen. Tiles need to go, and get back to icons. As far as the phone version of W10 goes. The tiled start screen should be an option. I say this to answer the question of being "successful" if we are talking selling more handsets. Familiarity is the biggest key to me. People want a similar experience when they change OSes. Switching from iOS to Android is much more palatable for some users. Mostly because the mirror each other with their start screen and icons (android start screen being more open). Visually to me its very familiar with icons and background picture. I think people will switch if they know they'll get a similar experience. IOS and Android app are visually similar too. This just makes it easier to switch. While using the same apps on WP can be a different experience. This is why I believe people don't chose WP. Similar (not the same) experience, then its easier to switch, more people switch, then more apps come. Tile are better for tablets. Icons & widgets for phone and PC