Hate to tell you , Wrexham and Shropshire was culled a few years ago, jan 2011 and no longe rexists as a company
class 67 where and stil are capapble of 125 mph speeds witrh suitable stock eg mk 3 coaches.
Indeed, wrong tense, they were top and tailing a set, apologies.
you create a new rake of passenger locos, and dedicated stock and run them anywhere just like br did, not like the new longer 800 series which will be limited to certain routes due to lenghth of coaches.
They didn’t really. Stuff was still allocated to certain routes. Even mk3 coaches were allocated to the WCML, or the ECML, or the GWML, and they didn’t run at all on the South Eastern/South Central, nor the SWML except as 442 EMUs. Likewise locos were still allocated to certain routes. Trains didn’t simply roam the country as you’re implying.
Do you build your hypothetical new locos as diesels, or electrics? If the former then what do you do with all the OHLE? If the latter what do you run on the non-electrified bits. If you build them as diesel electrics then how is that really any different to what they’re currently doing?
If you’re allocating stock to a route that is gauge cleared for bigger stock, why limit it just in case you fancy redistributing it to another completely different part of the country?
It really does make no sense.