Here’s the way I’ve been interpreting these items so far. I think it’s a logical interpretation of computers and rigs that would hopefully work for society games.
Your rig “gains the features” of a computer half its level, and that wording is key. Bulk certainly isn’t a feature and power needs would be covered by the custom rig, a class feature that doesn’t require power. If it does require power, only the computer would need it but a self-charging module would give you enough power to ignore the need most of the time.
I’ll give this example for a comparison point. Your custom rig also acts as a mk 1 personal comm. unit. You can miniaturize a computer to reduce its bulk and install a computer into the comm. unit of the custom rig. My point is that you can already install a computer into your custom rig at level 1 if you pay for the bulk reduction. It seems silly to have to pay for bulk reduction on a class feature too, especially because you’d have to pay for it before you leveled up. If it’s in your brain and automatically gained bulk, your head would explode on level-up.
Leveling up is an issue that could use an errata in my mind. Armor can also have a comm. unit installed in it which can be upgraded to a computer so these questions extend to all classes. I only really see two ways of handling it.
1. You lose the benefit of the module until you pay the difference to level it up.
2. The module acts as the lower level tier until you pat the difference.
I don’t see any reason for a module that’s not a class feature to level up for free. I think modules that give a set benefit (Security Measures +4 DC to hack) would stop functioning while an AI (+2 Social Checks/Tier) would operate at the tier you paid for until upgraded.
The range modifier is a great addition, but it doesn’t extend the range of your rig, it only extends the range of your computer/comm. unit. You can do everything a normal computer could do at range, but your rig gives no benefits. You cannot use it as a tool kit at planetary range, nor can you control your drone or ship at that range. You can issue verbal commands to a drone or communicate with people on your ship though.