I'd advice you not to update just yet. Atmosphere is around the corner and once it gets released you can make your decision based on available options. My guess is a tool will surface that'll let you patch Sysnand (automatically in the form of a payload or homebrew) or Emunand to support exFAT.
You have the freedom to also benefit from what's actually being offered (Hekate on fw 5.x). So I say give it some time and you might be pleasantly surprised.
You have the freedom to also benefit from what's actually being offered (Hekate on fw 5.x). So I say give it some time and you might be pleasantly surprised.