Earlier quoted context omitted.
Is there some way that it's a more direct descendant of Latin than any other Romance language is?
I'm not a linguist nor a Romansh speaker but my understanding has always been that at its core it is very much still a Latin dialect, thus I'm surprised by all the downvote hate I received.
But if so, I think they'd effectively be making up a story to account for Romansh's distinctiveness. I was just looking at some a couple of days ago (as a friend is traveling in Switzerland); I know Latin well, and what I saw was extremely different from Latin, in terms of sound changes, vocabulary changes, and grammatical changes.
Looking at https://en.wikipedia.org/wiki/Romansh_language there are typical Romance evolutions like
* fixed subject-verb-object word order (instead of Latin's variable word order that often prefers subject-object-verb)
* no case inflections (instead of Latin's case inflections)
* plurals apparently derived from Latin accusative plural (not nominative plural)
* compound perfect tense ("have done")
* definite articles (Latin has none)
* many systematic sound changes from Latin (all Romance languages have these, and which specific ones occur tends to define the sound of a specific Romance language)
And unlike other Romance languages (or Latin) it has "numerous Germanic loanwords":
https://en.wikipedia.org/wiki/Romansh_language#Germanic_loan...
My best guess is that the idea of Romansh as distinctively close to Latin is a myth or misconception.
Here's "The Fox and the Crow" in a poetic Latin version and a prose Romansh version (the latter from Wikipedia):
Cum de fenestra corvus raptum caseum Comesse vellet, celsa residens arbore, Vulpes hunc vidit, deinde sic coepit loqui: "O qui tuarum, corve, pennarum est nitor! Quantum decoris corpore et vultu geris! Si vocem haberes, nulla prior ales foret."
La vulp era puspè ina giada fomentada. Qua ha ella vis sin in pign in corv che tegneva in toc chaschiel en ses pichel. Quai ma gustass, ha ella pensà, ed ha clamà al corv: «Tge bel che ti es! Sche tes chant è uschè bel sco tia parita, lur es ti il pli bel utschè da tuts».
These aren't directly parallel in meaning, so they're not easy to compare word-for-word. Apart from pretty big sound changes, I notice three grammatical changes: that compound perfect ("ha ella pensà, ed ha clamà al corv" 'she (has) thought, and she (has) shouted to the crow'), the use of a relative in making an exclamation ("tge bel che ti es" 'how beautiful (that) you are'), and the use of separate words for comparisons and superlatives ("il pli bel utschè" 'the more beautiful bird' → 'the most beautiful bird'). (Latin would say "avis bellissima".)