Thanks for sharing!  I could very easily see the Valentine tank be added with a choice of 2 Pdr or 6 Pdr gun (Mk's III and VIII).  It would fill a major void in the EW and MW arenas.  Plus, it'd give Ah a true British tank.  

I 'spose the Cromwell would be a good choice too (both 6 Pdr and 75mm guns available), but it would be limited to LW.