You are going personal again and semantics, I will simply not follow down that road and help you to derail another thread.
The role is "mainline infatry" so all mainline infatry have the same role...
No, their DESIGNATION is mainline infantry.
The tools they use are what defines their role.
Their roles are:
Penals: all range AI specialist with AT stop gap upgrade
Grens: long range AI generalist inf(support and deterrent vs vehicles through faust)
Rifles: all range adaptable generalist inf(both AI and AT effective upgrade)
Tommies: long range adaptable generalist inf(both AI and AT effective upgrade)
Vols: all range AI generalist inf(support and deterrent vs vehicles through faust)
Cons: mid to close range vet piniata and utility meme, usable with and only with ppsh doctrine
You can't just throw multiple different units with different use into a single bag and call them the same.