@NicoP I’m sure you understand how your propsoed solution is a partial fix to the greater problem. If one utilizes your solution they then have to individually evaluate every deal based on when they entered the stage. Although your proposed solution saves a bit of time vs. an excel document it is still not as streamlined as it could be.
If “time in current deal stage” was readily viewable on all deals on the “Board” view of a pipeline, then it could be utilized by salespeople tracking those deals with great convenience. It would also help management during sales meetings/reviews.