I have the impression we are nearing the moment that Toki Pona has more writing systems than official words IMHO ... I think there are already more numbers system proposals BTW ... but if you were in need of one more here is one:
jan Sisewan (Cicero)| October 2020
My idea for a number system in toki pona
https://www.reddit.com/r/tokipona/comments/j9rvb1/my_idea_for_a_number_system_in_toki_pona/