Hardware routing (not the simple way everyone talks about)

Hi,

I am one of those people that want actual steps and solutions. I often give those to others when I help them that is why I would like that out of this post. I hope that wasn't overly redundant (that I want actual steps and solutions):
Regarding routing hardware out/in of Reaper, there is the hardware outputs in the routing and there is the plugin called "reainsert". Regarding that plugin and the hardware route here are my questions:

1. what about blending during post production (like a pre-recorded track that you want an outboard reverb to not consume the entire signal but to be like a variable buss volume for just the reverb effect)
2. what about when you have a patch bay (obviously you can't label your channels because they change because you have an actual patch panel)
3. what about live recording through outboard gear while pre-recorded tracks are playing (on other tracks of course)?
4. what about the reainsert plugin not sticking to the latency and "losing" the correction? (many users have reported this)
   I just can't get answers for basic stuff even on the forums. I think i'll create a reddit post (Done!)
   Answers should include track #s/labels and routing and steps in order. Its the least I can ask.