Well, the Yggdrasil is certainly not perfect and does have weaknesses, but its strengths are still worth it and compared to the original Berserker, no matter which version, it is still a huge improvement. I mean, it literally takes out a 95 ton mech's leg with a single kick. Combined with the amount of armor and still fairly decent speed, it should be a force to be reckoned with.
And yes, the Managarm and Terror should prove a pain in the butt. Steiner always had a tradition of excellent mediums, so I thought it would make sense to follow up on that tradition.
As for writing... I'm not a native speaker, so I guess it's difficult to reach the level of an actual professional native speaker author.
But to be honest, at least with the last official 3145 TRO, I was anything but impressed with the level of writing. In some parts, it seemed outright ridiculous. Also I didn't quite like new style for the 3145 series, meaning the focus on Battle history rather than the development process etc., so I tried to go back to the the style established with the 3075/3085 series.