The two factions present a bottleneck in the early game of upgrades, which for a long time prevent them from constructing units in T0. What forces to build in superior Techs.
Therefore the updates should not exceed 24 seconds (which is the standard content of construction of Conscrips/Grenadiers).
Imo:
-BP1 should be exclusive like the upgrade for grenadiers (same icon and name BP1 also located in T0) ATnades/Grenades with 24seconds cooldown. Not linked to an technology.
-Molo and ATnade would be 12seconds and 12 seconds each.
-BP2/3 Has an excessive time of 60 seconds each blocking any construction of T0. So it should be reduced to 24 seconds and 24 seconds respectively and the remaining time added to the Techs respectively.