Support for DirectX 10?!?!? Holy Cow Batman! That means you will be able to run almost non-existent DirectX 10 games made exclusively for Windows VISTA!!!! Oh boy!!!
How about adding support for DirectX 11.x (i.e. Windows7 and Window8) where most of the gaming improvements are. Meanwhile, they add support for Windows 10, but no DirectX 12 support means even if you have the hardware for it, you won't get any benefit from it now or in the future until this is rectified unless you use Boot Camp. Of course, Parallels 11 seems to have the exact same problem. That doesn't stop either of them from charging out the wazoo on every little update, though. You're better off just using Boot Camp, except that of course Apple keeps removing support for older Windows versions (i.e. it would be nice to have them all available as needed or desired. The one cool thing about VMWare Fusion is the ability to not only run XP for games, but Win98 and even Win3.1 or Dos if you want. I have a couple of games that only run right on Win98 and seeing my Win98 Retail has not been in use for some time, I used it to run a Virtual version and games like Leisure Suit Larry Love For Sail run properly once again. It even sees my Blu-Ray USB3 drive as a CD-Rom drive in Win98).
But there's no possibility of playing something like Pinball Arcade with DirectX11 through either of these (i.e. Pinball Arcade has a Mac version, but the lighting effects are vastly inferior to the Windows DirectX9 version for reasons unknown; they look like daylight compared to the Windows versions semi-dark room. There's also a DirectX11 mode it can run in and the tables are then "dark room" versions with really big lighting effects. My 2012 Mini is DirectX11 capable, but I'd have to boot into Windows 7/8/10 to use it. The makers of Pinball Arcade indicate the Mac version is based on the iOS version and thus has few improvements, but the lighting effects I see are just a matter of Contrast/Brightness issues VS DirectX9 (the DX11 effects are something different; although theoretically Metal would allow them if they supported it). Sadly, it's hard to get any fixes /adjustments for the Mac as they consider it such a tiny market compared to others. The ONLY reason the Mac got a version before Windows was that it was simple for them to convert the iOS version. The Windows version came later, but it's visually improved and closer to the PS3/4 & XBox versions. But even running Pinball Arcade in VMWare Fusion with XP with DirectX9 results in relatively slow performance (i.e. my 2008 MBP running XP in Boot Camp runs full speed with no slow-downs with Pinball Arcade, but my 2012 Quad-i7 runs fine in OSX, but VMWare is definitely dragging it down in XP. I haven't wanted to buy Win7 or 8 with 10 coming out, but I can't get Windows 10 either until I update OSX to Yosemite or El Capitain as Boot Camp for Mavericks is depreciated. I have had zero interest in Yosemite so that's a problem, but Metal in El Capitain might be enough to get me to update next month at which I could finally play this game with DirectX 11 mode in Windows 10 at least. All of this just begs OS X to get better gaming support. I hope Metal works out for it in the long run.
The gist is that until Parallels and/or VMWare support DirectX 11 and/or 12, they are going to be near useless for anything but running really old games in outdated versions of the OS (e.g. WinXP and Win98). They're probably fine for business software and the like. You'll need Boot Camp to do any serious modern gaming in Windows.