[CraazyCanuck]

Spawns - redesign bases and put the spawns underground with infantry only access. They wouldn't have to change the surface designs very much by moving the spawn points underground. They could existing tunnels and add in as needed depending on the base's architechture. Insert more elevator pads to allow quick access to multiple points across the facility and its outlying areas. Similar to bio labs, add teleporters in Amp stations and Tech plants to the outlying proxie points as well.

Sunderers - Taking out mt sunderers is usually a fairly easy task solo or otherwise. A defended sunderer..not so much. There needs to be incentive to stay with the Sundy, as it is much more lucrative to go a hunting while leaving the nest undefended. It's the riskier decision. SOE could implement a sundy defense bonus similiar to the base defense. Ribbons could be awarded based on time spent within a set proximity of the sundy while it was threatened (ie. enemies with in a larger radius) and also number of enemies killed while defending.

As to the Tech plant roof spawn issue. Anyone can gain access to the roof from the turret level. Even a max. Use the turrets themselves to jump to the roof, though an elevator access would be more convient. Could just add a small elevator pad on either end like those in spawn rooms.