As long as they can match the feature set on Android why even bother with it this go round? Make a Google Play edition for the people that must have Android but make the normal one only feature their OS. I think the Galaxy S brand is big enough to switch the underlying OS and most users that aren't power users wouldn't care.
Galaxy S5 now with tizen, yeah I could see it selling it tens of millions
from a usability standpoint
The Galaxy line is the official name for Samsung Android devices. Notice that the Windows Phones that Samsung makes aren't called Galaxy. You'll notice that in other products such as Cameras & Refrigerators from Samsung. Plus you're forgetting That Tizen is also co-developed/managed by Intel, Tizen Association, Technical Steering Group (TSG), & the Linux Foundation, NOT just Samsung. There's NO way it will be called Galaxy. Samsung's Tizen phones will be called something else.
What??!! People gonna notice when the Google Play Store & Google's 1st-party apps are missing & see Dat app store looking more struggle than the Windows 8/RT/Phone 8 app store. Also when it comes down to it Samsung & Intel are hardware companies, not Software companies like Google, Apple, & Microsoft. You already know Tizen is gonna be inferior to Android, iOS, & Windows Phone 8.
Bruh, I'm still amazed that he thinks that Samsung would bait & switch Android on the Galaxy S5 with Tizen, even though the entire Galaxy-line of Samsung devices/products are Android devices. Tizen devices/products will be called something else.