How is the Progress on HARDmod its been almost a month since last update. Are You still busy or did you abandon it.

Also before it gets into more stable state what are the most complex/realistic mods as of now.

I just wanted to ask why 21 boilers per 15 engines. Wouldn't 20 be enough.
According to wiki 1 engine needs 1,31 even if it was rounded down and i counted with 1,32 then 20 is still enough(20/1,32=15,15).