I'm glad you like the opposite teleporter idea. As for weapon spawns, I have found it beneficial to put important weapons, such as rifles and explosives out in the open and away from their optimal use areas, as to make every region of the map used. Ammo for said weapons should be placed in similar settings, but with a bit more cover or additional value (i.e. rocket ammo in a heavy traffic area, or shotgun ammo on 'the hill'). I would also recommend not putting rifles at the main bases because of their extreme effectiveness in the tunnel region.

I have many great ideas for weapon layout to enhance 'event spaces' and create a feel of zone control throughout the level, and will be glad to help however I can. Sadly I do not own H2V, or Vista for that matter, but I plan on getting both eventually... (where's my Service Pack 1?)