The Himitsu-Bakos are there to provide early end the runs for either an important central or a sundew/mental health clinic. They also have the benefit of being only parasitable mid run. They can also be used to build a scoring remote that taxes lady, which i did twice during the tournament. They aren´t as good against corroder but you have 2 Eli 1.0 to tax it, they still have to find it and it isn´t even seeing that much play anymore.
Yagura is just a piece of ice i always loved and never understood why it did not see more play. It often gets in at least 1 net damage since people don´t expect the damaging code gate and can secure r&d early on. But you can also put it on other servers where it is still taxing and sometimes the 1st sub won´t be broken and you can control your draws with it. If they play a Yog against them i am happy that they paid 5 just to invalidate my rezzed yaguras (most of the time 1-2, i am sad when there are 3 out). They really did shine in the Top-Cut where i drew multiples early and my opponents didn´t have ways to deal with them. All around a piece of ice that never disappointed me.
The Architects were put in especially against noise (and anarchs in general). I wanted ice in front of r&d that isn´t parasitable to discourage those deep medium digs. Also if they facecheck you can get immense value from it. I also love it in front of archives since Noise oftentimes only plays around crick and sometimes in front of an economy remote.
I really liked it since i finally wasn´t being medium raided anymore and was able to sometimes get trashed econ/ice/jacksons back.