A Title Much Cooler Than Anything on the Old Site
Yeah, it would be nice to have a chapter in the DMG dedicated to helping prep high-level play. I would expect that many of the tips would also help with adjusting encounters for optimized characters at lower levels.That's answering a pretty different question than the one asked though. If the GM's "job" is to ''balance for a more powerful party" with no say on how powerful is too powerful there must be tools built into 5ethat enable that gm to finesse monsters encounters & even individual PC strengths to the needs of their group. Past editions had various tools for that & I even named a few. You seem to be answering a very different & unasked question.
If you need to point at YouTube reddit & these forums as examples of tools 5e provides the gm you've listed three tools that are explicitly not things that [k]5e provides°. To go on and even suggest specific monsters for a group of a specific level very much calls into question if 5e actually provides[j] any tools for the gm to finesse encounters & even specific PCs as older editions once did. Our of the three tools you listed that are not provided by 5e reddit was created in 2004, YouTube 2005, & it looks like these forums seem to go back to 99 putting them squarely in the time frame of multiple past editions predating 5e. If there are "plenty" provided by 5e itself, why can they not be named