If Hui/Liang are working then the other voices should too, we just added that alert since a lot of X86-based phones don't seem to run them anymore. (it also applies for people attempting to purchase Hui/Liang) You can buy those voices from our website and install them via pleco.com/androidfiles to get around that alert.
We're planning to stop including x86 code entirely in 4.0, which may actually make the emulation situation easier since there will no longer be an issue of juggling some internal libraries that we do have in x86 and some that we don't - dumber emulators will simply run the whole app in ARM. But honestly the best Pleco-on-desktop experience going forward will probably come from an ARM-powered Chromebook. (or, better still, an iPad with the now-much-more-desktop-like iOS 11)
We're planning to stop including x86 code entirely in 4.0, which may actually make the emulation situation easier since there will no longer be an issue of juggling some internal libraries that we do have in x86 and some that we don't - dumber emulators will simply run the whole app in ARM. But honestly the best Pleco-on-desktop experience going forward will probably come from an ARM-powered Chromebook. (or, better still, an iPad with the now-much-more-desktop-like iOS 11)