I think the overall aim of Liberty is to have it like Nascar, where you have multiple winners in a season, i just cannot see it happening because of the politics, but it's nice of them try and revolutionize the sport unlike Bernie who Kowtowed to the big teams to keep the status quo.
Sadly None of the other big guns like Audi,BMW, Toyota or Porsche look to be joining F1 in 2021, maybe turned off by uncertainty and also the meddling of Mercedes and Ferrari who are against it and using their pull to halt it.
Only thing to look forward to engine wise is Mclaren for 2021 from an article i read last year with quotes about it by Zac Brown ,they were in discussions with BMW M division for technical help in building their own engine, and would likely also supply engines to other teams, (Williams and Force India) being the teams mentioned.