It's actually pretty hard to cheat the invisiblecastle site. It records all rolls, so if you rerolled to cheat, it'd be obvious.
Sure, there's no problem calling it motorcycle sized. Like I said, all we need is an official agreement on size, since the materials don't specify to any satisfactory degree. And I'm glad we're not slapping smart tires on it, as that makes it only a bit slower than a metahuman(5/18 vs 10/25). Since you can't attach a rigger cocoon to it, you've not overmodified it. I haven't had a chance to talk to Henzington about it yet, but Reiper concurs that slapping a rigger cocoon onto a non-personnel vehicle isn't kosher.
This brings up a question, though. As a mage, wouldn't Rave have found it slightly less than useful to be stuck in a box with no ability to cast? Or was this more of a "something big is coming, hide and make my drone fight" kind of thing?
I seriously think we're playing 2 different games. The Shadowrun I play isn't all about throwing huge damage at players/NPCs. You seem caught up on this one factor, which ironically you yourself could easily utilize for yourself. Nothing is stopping Raven from using F12 spirits, since he has Mag 6.
I'm not sure I follow your logic on not worrying about the legality of the drone. You're saying that, since every aspect of it is more or less equally illegal, as is everything else you carry(what are you carrying? seriously, it's time for you to show your character to the group), it's up to the GM to either handwave it constantly to make your character not get hassled like it should be or waste lots of time/devote entire sessions to you being arrested and resisting arrest or busting you out of jail? Picture this for a moment. 2013. San Francisco. It's 8:30AM, the birds are chirping, hot soccer moms are out jogging... and there's a tank rolling down the street. A small tank, but still a tank with huge guns of obviously military grade. What will the reaction be? Military response immediately, with the police doing whatever they can to stall before the National Guard can get on site. That's what every second of any day would be like when that drone is around. Now, obviously the Barrens is somewhat of an exception. As Lone Star doesn't patrol here, there's a small chance that they haven't heard about it yet. If they do, they will absolutely, without a doubt, no-questions-asked,100% guaranteed deploy absolutely all available forces to capture/disable you. If you leave the Barrens, then there's no chance they won't know instantly. If you stay in the Barrens, then you just have to worry about the fact that every gang will either want to kill you for the threat you pose or kill you to steal this amazing tank you possess. Or worse, they report you to Lone Star's tip line for some easy, no-risk-of-death cred. Every second that that thing is in public that you're not being hounded by someone is a second that the GM is bending the world and setting to make your life easier. It's not a 32F pistol that you can tuck in a pocket. It's not a 32F foci(there's only 1 forbidden focus type, the symbolic link focus). It's not something you can hide. It's big, it's loud, it's in your face. A sound piece of advice would to go the typical rigger route and get a bus to cart this thing around until you absolutely have to get it out. That is, if you plan to take it out of the complex. If you're just using it to patrol the neighborhood... that's one effective theft/gang deterrent.
edit: Wah, you changed your post. Well, I'll keep the above advice here, as it's sound advice for the future. BTW, Honda Vikings can't take the walker mod. It's limited to Body 10 or less. Pakka isn't working with you guys yet. He's mostly healed up after a week, and he'll be pretty agreeable once we apply Trioxin's amazing 13 hit leadership test. There still remains the matter of negotiating terms with him.