My suggestion for Table 68 services (Rugby - Stafford via Birmingham) is as follows:
1 x InterCity West Coast London Euston - Shrewsbury, calling Watford Junction, Milton Keynes Central, Rugby, Coventry, Birmingham Int, Birmingham New Street, Sandwell & Dudley, Wolverhampton, Telford Central, Wellington Telford West, Shrewsbury
1 x InterCity West Coast London Euston - Liverpool Lime Street calling Watford Junction, Milton Keynes Central, Rugby, Coventry, Birmingham Int, Birmingham New Street, Sandwell & Dudley, Wolverhampton, Stafford, Crewe, Hartford, Runcorn, Liverpool LS
1 x InterCity Cross Country Southampton Central/Reading - Manchester Piccadilly calling Oxford General, Banbury, Leamington Spa, Coventry, Birmingham Int, Birmingham New Street, Sandwell & Dudley, Wolverhampton, Stafford, Stoke-on-Trent, Macclesfield, Stockport, Manchester Pic
1 x InterCity Cross Country Bournemouth - Glasgow Central/Edinburgh Waverley calling Brockenhurst, Southampton Central, Southampton Airport Parkway, Winchester, Basingstoke, Reading, Oxford General, Banbury, Leamington Spa, Coventry, Birmingham Int, Birmingham New Street, Sandwell & Dudley, Wolverhampton, Stafford, Crewe, Warrington Bank Quay, Wigan North Western, Preston, Lancaster, Oxenholme, Penrith, Carlisle, Lockerbie, then either Motherwell, Glasgow Central or Haymarket, Edinburgh Waverley
2 x Regional Express London Euston - Birmingham New Street via Northampton calling Watford Junction, Hemel Hempstead, Berkhamsted, Leighton Buzzard, Bletchley, Milton Keynes Central, Wolverton, Northampton, Long Buckby, Hillmorton (Rugby Parkway), Rugby, Coventry, (maybe Tile Hill for connection with trams), Birmingham International, Birmingham New Street
2 x Local Coventry - Wolverhampton calling all stations (maybe omitting Adderley Park) via New Street
2 x Local Birmingham International - Wolverhampton calling all stations (maybe omitting Smethwick Rolfe Street) via New Street
1 x Regional Express Birmingham New Street* - Chester (or Aberystwyth) calling Smethwick Galton Bridge, Wolverhampton, Telford Central, Wellington Telford West, Shrewsbury, and onwards to Chester (or Aberystwyth)
1 x Regional Express Birmingham New Street - Crewe via Stoke-on-Trent calling Smethwick Galton Bridge, Wolverhampton, Penkridge, Stafford, Stone, Barlaston, Stoke-on-Trent, Kidsgrove, Alsager, Crewe
Not shown but uses part of the route:
2 x Birmingham International - Rugeley Trent Valley calling New Street, Soho Road, Tame Bridge Parkway, Besot Stadium, Walsall, and all stations to Rugeley TV
* Subject to the Senedd being amenable to curtailing at New Street.