Yamashita and Macarthur

I think Yamashita And/Or Should get a Bio or Trainable. I dont know if they are making bios or trainable still or if they're even getting one or not, I just thought that they were there for a while and I feel that their impacts on History should be in consideration that they can get a buff. And plus, infantry is already bad as is.

Opinions? Who do you think should get a trainable/Biography?