As an Antagonist it's pretty much impossible to catch a break when going up against a coordinated team. There is a multiplicity of reasons for this, too many to address on one post. So I'll just focus on the spawn camping issue.
This is especially a problem on smaller maps with few spawn points.
So my suggestion is to remove spawn points all together as Antagonist and let them spawn wherever they want (with restrictions)
Instead, we could have a spawn reticule on the ground that we could move around freely, or a "spawn ball" similar to Doldren's astral form that would allow us to spawn anywhere.
That reticule could be green at any place that is allowed to spawn at (ya know, like Uras-Beherit) and turn red anywhere that's off limits to spawn at, such as anywhere that's too close to the Raiders spawn point.
I feel like implementing something like this would really help to alleviate the spawn camping issue.