Samsung's a most conservative company when it comes to providing enabling tools to end users and consumers of home electronics and computers. RAPID Mode for 840 EVO and 840 Pro's probably being done just to test the market response. It often takes two or three years for Samsung to do something competitors like Lite-On IT (in ODD) and OCZ (in SSD) would complete in several weeks.
The company invests a lot on software. It had its own word processor to compete against Microsoft Word. It had its own operating system software, actually more than one, like Bada and invested a lot into customizing Windows Mobile and Windows Phone. Considering the amount of billions of dollars wasted in such efforts, the outcome's typically "worse than none offered." End users tend to switch to third-party tools. Omnia I and Omnia II have been symbolic of its software failure (despite its leadership ahead of Apple and others in hardware) before joining Android followers. Japan Inc. has been a bigger example though spending decades to create and spread Japanese version of DOS and OS/2. There were at least ten electronics makers in Japan able to produce far better smartphones than Galaxy series during the past three years, but none was able to export as many to Europe and North America. That was primarily because global users became increasingly concerned more about software than hardware. Part of it's probably related to the fact Samsung (along with thousands of other South Korean companies) was heavily globalized during the late 1990s selling half of its shares to foreigners and building R&D centers and design labs in each continent and each key market.
Therefore, I was sort of impressed some months ago to find out the Magician software worked better than I had expected. Translation's still imperfect. You can see right now at the bottom saying "... one 840 PRO, 840 EVO,840 EVO ..." There should have been a space between 840 EVO and 840 EVO mSATA. Click Secure Erase. The Warning says "... you back up your data first" but the Note says "please backup the data currently stored..." The former sentence uses back as a verb and to back up clearly means to make a backup, but the latter uses backup to mean to back up. Such inconsistencies do not cause misunderstanding or confusion, but it's a problem inherent with Samsung's organizational structure.