I'm not entirely clear what progress you're talking about.
The entire line of spikes, from simple wooden ones to the most powerful ones, is essentially progress... Moreover, I specifically tried to balance them so that they could effectively deal with all vanilla enemies, with the exception of the Aquilo Destroyers, for which I have another fork with atomic and thermonuclear mines.
If you're talking about additional technologies that increase the effectiveness of existing spikes, that's illogical. Because spikes are, by design, the most primitive weapon possible.
There's simply nothing to modernize them...