Aproposnix

Will it have live preview like Typora or MarkText?

You can use Whisper+ with heliboard if you want offline voice to text.

https://f-droid.org/packages/org.woheller69.whisperplus

I just use whisper+ with heliboard. Works perfectly for me. https://f-droid.org/packages/org.woheller69.whisperplus

Please, can someone with coding skills create an AndroidTV compatible client?

I really wish there were an AndroidTV compatible client for peertube. None of the clients are optimized for it.