A Minecraft SMP Idea

Conlang Idea #1: Two Sets of Grammar Changes

I have these ideas to apply two types of grammar changes to create the two descendants. For one set, I'm thinking of the singular, plural, and distributive numbers evolving into something different while retaining the singular and plural. The other set would take a different path. I don't know about what other options of evolution there are to apply to my chosen proto-system. I already thought of, for set one, the words for "one" and "this" serving double duty as themselves and the indefinite and definite article respectively. For set two it's just a definite article derived from "that" instead. I don't know about augmentatives and diminutives, though comparatives, equatives, and superlatives could emerge. For that one descendant with the trilled affricates and pharyngealized consonants, I'm thinking of the system being similar to that of Classical Oqolaawak. For the other descendant, I'm thinking of a version of the system in the modern version of Taqva-miir(the conlang from the Conlang Case Study series).

For the TAM system, I have two ideas, though I'd need to reconsider. The original derivations are "to finish" for the perfective aspect, "to stop" for the cessative aspect, and "to go" for the future tense, the present and imperfective being unmarked. Looking at the Oqolaawak and Nekāchti showcases, and remembering the Grammatical Evolution part of Biblaridion's old tutorial series, the cessative aspect could become a perfect tense, and the perfective aspect could become a past tense. But given my choice of words those aspects are derived from, I could switch their paths. Whatever the case, there could be a system with only the past, present, perfect, and future tenses, or English's tense system without the habitual tense. I'll make it past perfect(evolved from past perfective), past imperfect(evolved from past cessative), present, and future. Yet, how long would this tense system even last without any aspectual distinctions? My three copulas, derived from "to exist", "to live/reside", and "to stand" could help out.

All that could be applied to the trilled affricates and pharyngealized consonants language. As for the other descendant, someone on the Discord server "Conlangerama", Kazu said this: "As a native speaker of a tenseless language, the "past cessative" just looks like imperfective, and the "past imperfective" just looks like plain perfective." I could make that second descendant a tenseless language like Ewe and Ilothwii are. But still...

For one of the two descendants, I'm evolving a noun case system. For the other, I'm choosing polypersonal agreement. Those two rarely coexist in languages, and the coexistence doesn't last due to unneeded redundancy. Of course, there's also the taxonomic division of colors and the conceptual metaphors to take into account as well. But what do you guys think of these ideas? I could use the advice and clarity.