Yes, I agree that "MAG Safe" and other safe rules are silly.
Decreasing the weapon respawn time sounds like a GOOD idea though. You still have to drive your tank across the map and grab it.
DM is practice for strat, so lowering the respawn times will allow players to try out the weapons without having to wait forever to grab it if somebody else recently grabbed it and left the area.
That actually sounds like a cool idea.

How much to lower them? I'll leave that up to you in the event that you DO decide to do it.
It's just silly DM, are we worried so much about "balance"? Besides, change would be mutual, so all players will have same opportunity to grab weapons.
I also have some silly ideas for DM, that I mentioned in 1.5 patch thread, but nothing was said of them. (probably got buried in my massive post.

)
One idea is adding a BDog Walker to vehicle selection, and equipping it with Dual SP-Stabber.
The ODF could be named bvwamp.odf, and it would come right after Sasquatch AG in netveh.odf.
With the missing .vxt files added in 1.4O, you'll need to edit those too or it won't show up.
Another idea is giving svwamp.odf 2nd Blast Cannon, just like CCA Walker in strat.