You are actually very close to my own strategy that I have worked with (and some other folk that I know) for many years.
There are several (maybe even many) approaches using a series of MA’s. One well-known method was the GMMA (Guppy Multiple Moving Average). In fact, one very old trading system based on the same kind of idea was Bill Williams Alligator indicator, which is still on many platforms. But I don’t think anyone uses the original settings any more…
The idea is for the MA’s (usually EMA’s) to form a band where the longer term MA’s identify the core “trend” line and the shorter MA’s show the swings from one side to the other.
Personally, I find the method very useful for entries both in terms of direction and timing. However, as with all crossover systems, the same combination of MA’s rarely get you out quick enough and much, even all, of any profits seen can quickly evaporate even on one reversing candle.
I have other tools to set targets and stops but I am always in line with the EMA band. E.g. Price Action S/R type analysis behind the band is one good way of identifying suitable exit areas.
One positive feature is that this kind of band often suits many timeframes from, e.g. daily to 15mins.
But I doubt there will be many positive responses here because it is not a particularly popular approach to trading