I was listening to some performances from Netherland's "All of Bach" group that performs Bach works on Baroque instruments. I quite liked the sound of the strings, and I thought that it would be interesting to hear more "Romantic" repertoire on such instruments (sometimes I feel that in modern performances of "Romantic" repertoire the strings are a bit too oppressive, and the lighter/brighter sound I heard in the Bach performances might make for interesting comparison). According to this thread https://www.violinist.com/discussion/thread.cfm?page=782, strings in the late 19th/early 20th centuries were still mostly gut (except for some metal on the G string I guess?), which is the time period that Rachmaninoff and Mahler wrote their symphonies in.
My question is this: would it sound appropriate/good to play these "Romantic" symphonies on say Baroque string instruments (or instruments closer to Baroque sounding than modern ones)? Has this (i.e. performing on more antique instruments) been done, with the repertoire I've mentioned?