And utterly pointless...
Well the Llandudno - Manchester section anyway.
Holyhead - Euston with ATW would just be another layer of complication to the WCML, and then they'd proberbly do what the rest of arriva did and disable EPS so then slowing down the services.
What needs doing regardless of CRE - CTR electrification is the 221 fleet being electrodieselified with two extra carrages each. And some more 390s ordered for the BHM - Scotland route. Then more doubled up 221s can run, and they'll also be longer, and they would be able to split at CRE for a 2nd destination in the North West. Such as a 2nd Liverpool service (Via St Helens), Blackburn via Preston or Bradford via Manchester Victoria service...
If CRE - CTR does get electrified then with some clever timetabling and holding on to some of this new electrodisel fleet (other off wires services would make their use viable and worth holding on to a bigger fleet, I'm thinking Blackburn via Manchester or Preston, Bradford via Summit Tunnel, Southport, Barrow, etc. etc. I'd be thinking of a standard hourly path into Crewe with an assortment of off wires services throughout the day) anyway, some clever timetabling would allow every other service to continue to Holyhead (& Llandudno?) Splitting at Llandudno Juncrion. It would also mean only having to fire up the diesel half way between Crewe and Chester (to get them warmed up ready) And keeping the same sized 221 fleet with ICWC will allow a more effective use of their paths for more off wires services, that will become even more pertinant when (if) HS2 happens as the WCML will be used to provide more reigonal journeys.
PS: If the EDMU 221 fleet was employed more perminanly, it doesn't just need to be for off wires services north of Crewe, it could be used to extend one or more of the sevices that run through Birmingham New Street, either down towards Gloucster or Shrewsbry. Either would be well welcomed I feel, restoring lost links to London.
And while the're at it, do the same to the 220 and 221 fleet at XC (putting the shops back in!) and the 222 fleet at Midland Mainline, then we can scrap the idea of new bi mode IEP units simply by electrifying the Midland Mainline all the way to Leeds and Doncaster (and York via Leeds possibly) and suddenly the IEP becomes a lot cheaper. (Can you tell this is a pet gripe of mine?)