Pouring over my TROs, I find it very interesting how as readouts progress, you find more and more balance if not symmetry in the Mech designs.
A lot of the early Mechs have that “Lets throw some weapons at it and see what sticks” feel to them… Which leads to a lot of Mechs where the weapons are asymmetrical and or singular and their heat balance is not balanced.
As you progress into the middle year Mechs to include the Clan tech, you begin to see much more balance and symmetry in the designs. Very few Mechs of this tech level do not have weapons mirrored and or do not present with variants that cover the short, medium, long range spectrum by default.
When you get into the later TROs thing get weird again… Suddenly you are confronted with these uber-Mechs, that again, forgo symmetry and or are fielding insane levels of tech and firepower that multiple early TRO mechs cannot match even in a lance or star!
My personal preference leans toward the symmetrical designs. That said, I have this bizarre attachment to my beloved Zeus even though it is a perfect example of asymmetrical design?... Go figure that one eh?

Out of curiosity which styling’s do the rest of you tend to lean toward?