Unsure where else would the depot go? Other sites like Landore, as shown for the majority of the last few posts, is very much filled with 175s now and Cardiff Canton is a large place with many different fleets and isn't really a maintenance depot like Chester as it says in the name, Cardiff Canton Sidings. Since the 175s haven't exactly gone much of anywhere for a while, with a few not moving at all since their entrance into storage such as 175113 which hasn't moved from Chester since it entered in October, they can't exactly be in any good state, especially without required maintenance which Landore, Holyhead and Crewe cannot provide