How about a DW let's play with a low tech and fairly weak nation e.g. Bihar in India or even someone like Ethiopia or Inca if you want the ultimate challenge?
Victoria 2 yeah. It would be nice to see an entirely new game. But you should definitely do EU3 again in the future. Besides you will be better the next time you play it.
Stalin if you do play Victoria 2 please use a less used country like Mexico or Panjab and try to make it a successful Great Power.
If you do a Vicky 2 LP as it seems it will be then please do it with Austria and try to form germany before Prussia can.