I hesitate to start this topic, because I fear pointing this out could result in a nerf instead of a buff… but here we go anyway.
3xHB1, 3xHB2 = 300 PIO / 300 SET; 66 Area
4xHBB = 300 PIO / 300 SET; 60 Area
HBB = 10% area savings for some additional building costs
3xHB2, 3xHB3 = 300 SET / 300 TECH; 78 Area
4xHBC = 300 SET / 300 TECH; 80 Area
HBC = 2.5% more area plus additional building costs
3xHB3, 3xHB4 = 300 TECH / 300 ENG; 90 area
4xHBM = 300 TECH / 300 ENG; 88 area
HBM = 2.3% area savings for additional building costs… and we’re talking really expensive building costs now
3xHB4, 3xHB5 = 300 ENG / 300 SCI; 102 area
4xHBL = 300 ENG / 300 SCI; 100 area
HBL = 2% area savings, I guess its nice that you were already dropping a full slate of A-fabs for the HB5 so its not really more expensive to use HBLs over HB5s if you also need engineers (also, 75 scientists is plenty lol)
The hybrid buildings seem to follow a pattern where they require more advanced building components for net fewer total fabs since only 4 buildings are needed instead of 6 (but at additional total cost due to more advanced fabs required).
HBBs - Should be utilized wherever possible to maximize SET/PIO utilization as it saves precious area
HBC - never build unless you only need 1 and you have a corner case example of just the right Settler/Tech count versus area to fit it in where an HB2+HB3 wouldn’t fit
HBM - I guess its kind of better, and maybe you only need a few engineers so getting some techs with it might be worth it. Probably will see these around the universe but probably not with regularity.
HBL - Basically better if you have scientists and engineers together, and if so, you already needed the a-fabs anyway - but only a few people will probably ever need to squeeze the last bit of performance out of a planet at the stage you need HBLs anyway.
HBBs offer 10% area savings when fully utilized versus an equivalent number of HB1&2s
HBCs offer a net WORSE area
HBL/HBM offers around 2% area savings
If HBB is the standard (and I think it should be) then the following changes should be made:
HBC - 17 or 18 area ( 13% / 8% area benefit - I vote 17 area)
HBM - 20 area
HBL - 22 area
At the very least, HBC should be changed. I don’t expect anyone will ever build them, except in a very corner case situation of base area remaining vs. pop need.