Might not be a bad idea if you can keep others from feeling like they have an advantage because you previously worked with them. There's always someone who feels disadvantaged or jealous of previous connections and thinks there might be favoritism. Emotions at work can be so annoying. LOL

I get it. I brought my right hand from a previous job. One person didn’t like it. But I was clear that I needed her because she could translate me for them. And she was a higher rank so I delegated a lot to her I was selfish. I really wanted someone I knew I could trust 😞

Nothing wrong with that and it worked for you, and I'm sure it improved your performance.