Detail #23: Conjunctions with dummy pronouns

This idea has some similarities to this old post, but with quite a different locus of marking and even basically a different function altogether: this time, conjunctions no longer serve to mark the relation between two verb phrases (or even two nouns, by way of implicitly coordinated verb phrases), but marks something about a single verb phrase or noun phrase.

In some language, (I would especially like it in one where conjunctions are followed by an oblique case along the line of what English does, only with non-pronouns as well - alternatively, case marking is sensitive to context), there could be a commonly used construction with dummies carrying grammatical information about the VP or NP in which they occur, so, for instance,

A bit like if "... and shit" was grammaticalized, but for a more wide range of meanings: TAM, case/adposition-like things, adjectival things for nouns, indefinite determiners and quantifying expressions, ... some other expressions could be formed likewise with and + noun.

(obviative) it and (obviative) it : some 

 ran around and it.obl : ran around intently, ran around (perfective)

stone and them : stones (if the language lacks, say, morphological plural for inanimates or somesuch)

bean and it: some beans (with uncountable nouns, to express large quantity) 

we thought and at it (locative case of some kind) : we considered, but did not reach a conclusion

 we thought and in it (locative case of some other kind): we considered carefully

we thought and it.acc : we concluded

we traveled the land and it.acc: we passed through the land

This would probably go at the end of the vp?
Examples with nouns instead of dummies:

bean and bag : a bagful of beans

 fish and net: a catch of fish

water and pitcher: a pitcherful of water

To obtain the meaning "and" usually would entail would require reversing the order of the nouns:

net and fish: some/a fish and a/some nets

bag and bean: a bag and some beans

 ...

Over time, the conjunction easily could turn into an affix, and sound changes could obscure the relation to the conjunction.

Detail #7: splitting the adjectives in two classes: "adjectives vs. adjectoids"

Many conlangers like reducing the number of word classes in their languages. One popular and relatively easy target of this reduction are the adjectives.

Let us do something else, let's increase the number of word classes, and let us do that by splitting the adjectives in two!

How would one go about doing something like that? First, let us make them behave differently morphosyntactically; have one of the classes mark congruence with the noun as far as case goes. Let us have the other category redundantly mark some kind of noun class system along the lines of the system of Chinese.

Let's call the two adjective kinds adjectives and adjectoids. The difference given above seems a bit small, let us come up with some other differences, both notional and syntactical.

A simple difference that could be relevant to the speakers of the language would be whether a word is understood as denoting that the noun has a quality, or denoting that the noun is a member of a class with a distinguishing trait.


Adjectives

• mark case and number
• productively can form verbs both or 'turning increasingly x' or 'make something x'
• use location-like metaphors (go (to) x, g from x, stand at x)
• have case-congruence even as verbal complements
• come closer to the head noun

Adjectoids

• mark noun class
• tend towards more periphrastic expressions
• use membership-like metaphors (join x,  be of x, be with x, x encompasses, x embraces) 
• have no congruence as verbal complements
• go further from the head noun

Adjectives have a closer syntactical affinity to verbs, adjectoids to nouns; still, both have (partly separate) morphology for forming nouns and verbs; verbs more easily form adjectoids, nouns more easily adjectives.

Both classes have some exceptional derived forms among nouns and verbs. Some adjectives have synonymous adjectoids, but far from all. Prepositional phrases easily form adjectives as well, whereas pure nouns easily form adjectoids. 

What word order this language otherwise would prefer depends a bit on what other syntactical features it has - I think something along the lines of det NOUN adjt. adjd.  would be neat.