Why not use the road bridge in top left as the station buidlings, access to single central platform via stairs, and you have set it on the old Great Central.
You could then do away with the third CIRCUIT, maybe have more storage space in the storage/fiddle yard and use the third line towards the station as either a long headshunt or a siding? Or give you better access to put the t/t behind the shed?
Station buildings on the road bridge do away with having to model their access areas, parking etc too
An ex-GC line would give you availability of ex LNER A3's, V2's, B1's, O4's O2's, LMS Jubilees, Scots, Black 5's, 2-8-0's, WD 2-8-0's 9F's and Brits, all in the 1950's
Diesels included 20's, 31's, 37's, 47's, GT3 and MAYBE D0280 "Falcon" returning to, or leaving Brush at Loughborough?