Jagd[tiger] is a buildable replacement for the Kettenkrad... It can cloak and cap points.
PE is far from half assed. They fill a niche that the Wehrmacht lacks, being able to easily bypass fixed defenses with mechanized infantry and light vehicles. PGs and halftracks provide a mobile self sustaining force, halftrack reinforces PGs while PGs fix halftracks and any other vehicles.Try learning how to play PE, you'd be surprised how effective they can be.
The original idea would be near useless while the no off map support idea would be OP. On a small map, you could just turn that on and you could get to an enemy base with little resistance provided you had been building up the assault.