Scaling Alien Upgrades

MistenTH

<div class="IPBDescription">Multiple Buildings per Upgrade</div>Carapace now gives +40 armour to skulk with 1 shell (30 res)

This system splits the upgrade.

Shell 1: +13 armour, 10 res
Shell 2: +13 armour, 10 res
Shell 3: +13 armour, 10 res

+Smaller investments at a time
+No immediate jump to maximum power - scaling
+Prevents upgrade sniping from having such big effect.

Yuuki

Or just have 3 researchable level on a single shell. It would avoid to have so many structures.

Also this one is not really a + imo:

-Prevents upgrade sniping from having such big effect.

I think the upgrade path should be simplified also, upgrade the hive, build the shell, upgrade carapace, so many steps!