I have no idea what the current meta or units are like so I'm just gonna list the ones I think are OP
1 - Crabe (still op)
2 - Scorcher (really all you need to dominate flat maps early)
3 - Glaive
4 - Flea (OP map vision and harrassment tool)
5 - Scythe
6 - Weaver (7.5bp, all-terrain and mini radar)
7 - Archangel (probably best land AA idk)
8 - Dominatrix
9 - Pillager (a solid long range artillery, probably preferable to impaler or tremor)
10 - Scalpel (I assume these are popular right now and I need a mid-range pick)
Its surprising how once you start trying to make an all-round factory its actually probably worse than the ones tailored for specific map types.
I switched pyro for scythe, need an invisible unit of some sort and pyro is early game overkill in this fac. Would be nice if I could fit a venom in but meh. Wanted absolutely nothing from shields (which says a lot). Crabe, scorcher and glaive take care of 90% of my needs, dominatrix fills in any blanks usually.
Edit: noticed striders are allowed, I think if you can afford striders then you can afford a strider hub, no need to include it