Brian, there's no easy solution to the bluray PGS subtitle issue yet, forced or otherwise, MakeMKV will rip them just fine, and the software players are starting to support PGS in an .mkv, but when it comes to transcoding those files into something playable on an iOS device, there's no seamless, easy way to do it.
You can tell MakeMKV to only include the forced subs, then they'll be the only ones there when it comes time to do something with them. Depending on how you go about it, it takes a few steps, using various tools to extract the subs, convert them into a different format, reinsert them, then feed that to something like Handbrake to convert to an iOS or Apple TV preset.
If you look in the Handbrake, MakeMKV and Macrumors Apple TV forums, I've seen some good threads and tutorials on this subject, but the solutions at the moment are far from "neat."
You can tell MakeMKV to only include the forced subs, then they'll be the only ones there when it comes time to do something with them. Depending on how you go about it, it takes a few steps, using various tools to extract the subs, convert them into a different format, reinsert them, then feed that to something like Handbrake to convert to an iOS or Apple TV preset.
If you look in the Handbrake, MakeMKV and Macrumors Apple TV forums, I've seen some good threads and tutorials on this subject, but the solutions at the moment are far from "neat."