Learn English – Formal alternative for “dos and don’ts”

I want to change the ‘there is not a need for’ to something more formal.

"The merit of their approach is that it circumvents the necessity of designing ..."

circumvent verb: find a way around (an obstacle).

• overcome (a problem or difficulty), typically in a clever and surreptitious way. "I found it quite easy to circumvent security";

synonyms: avoid, get around, get past, evade, bypass, sidestep, dodge; informal duck; "the checkpoints were easy to circumvent"; Google circumvent

Yes, this seems fine. The former is not attached to informal language whereas the latter can be.

To say 'from all over' is perfectly normal to describe what you have written under that context and it is not an informal phrase.

It's a way to express something or someone coming in from numerous directions, many different or varied places and so on and so forth.