I'll make some test models out of paper. Rev Optimus is 14cm tall. I'm thinking the shield could be 8 or 10cm tall. Will post pictures soon. Also are you gonna get the revoltech optimus Prime DX? edit: I made them and took some photos I think I'll have to make a 9cm version. 8cm looks too small and 10 too large. The 8cm tall shield: The 10 cm tall shield: More below.