I guess I am in the minority here, but I say keep because I think the GST is a timeless design (Chanel still does big CCs... see
this recurring style - the one I’ve linked is from 2020). It has the classic woven chain, quilting, and the CC logo. I personally think it’s a super practical tote bag that they will definitely bring back in the future (at 5x the price...). Even if they don’t, I don’t think this style looks dated, whereas the Medallion tote brings me back to the early 2000s immediately (not that the Medallion isn’t an attractive bag - but it definitely seems like more of a trend bag to me).
ETA: I’ve actually been casually browsing for a GST because I like the style and want to get it at a good price now before Chanel brings it back and the preloved prices skyrocket. Re: LV, agree with above posters that it seems like a definite trend piece (not bad but something you should consider)