Ehhh..I love Landmates and not least because they look cool - Shirow-Sensei went to great lengths to make it clear they are as or more valued for their versatility and toolbox as their protective values. He was quite meh about the protective aspects, really. Which I like - uber tanks don't exist in a world setting where someone promptly builds an uber-penetrating round.
But ACPA are Cyberpunk and Landmates aren't. Virtuality for piloting, massively heavy, etc.
They are ridiculously tough, though, and unlike Landmates, the maintenance overhead is rarely demonstrated.
Soo..ACPA with Landmate characteristics. And the arms, of course, because cool.
The arms, and the general design of a landmate kind of make the VR inteface of most of the cyberpunk 2020 ACPA redundant. And the Landmate can still use VRI for the weapon and subsystems....
Regardless, I still want a BGC style hardsuit, man I love those things.