Already done but by Preiser:

Advancing, marching on roads on parade etc

http://www.plasticsoldierreview.com/Review.aspx?id=801

http://www.plasticsoldierreview.com/Review.aspx?id=834

http://www.plasticsoldierreview.com/Review.aspx?id=789

http://www.plasticsoldierreview.com/Review.aspx?id=1053

http://www.plasticsoldierreview.com/Review.aspx?id=1705

Also at least a mortar crew on parade that I cant see listed on PSR, indeed most of Pavols wish list is covered except Hitler and I know I've seen several figures available from other manufacturers, dogs can be got from other sets...

Caeser Command and marching:

http://www.plasticsoldierreview.com/Review.aspx?id=2146

http://www.plasticsoldierreview.com/Review.aspx?id=2032

Ykreol or made by them

http://www.plasticsoldierreview.com/Review.aspx?id=520

http://www.plasticsoldierreview.com/Review.aspx?id=1613

I'm waiting for Caesar to issue "German Infantry Relieving Themselves" - actually that could be a series - "German Infantry Relieving Themselves in a Latrine," "German Infantry Relieving Themselves in the Field," "German Infantry Relieving Themselves off the Back of Vehicles..."