Time line

As we all know hoppers are a big problem for a lot of clans.
In my mind prevention is far better than cure, which is why I'm suggesting a time line incorporated into everyone's profile.
It needs to be over a sensible amount of time maybe 6 months.
When you go onto a profile the time line shows a players activity as in what clans they have been in and for how long. If they are seen to keep moving from clan to clan then you have a pretty good idea of there intensions.
If they were a player who moved in a clan family to sister clans then the same clan names would keep appearing which again would clarify alot.
The thing with this idea is that it would go along way to helping everyone, a clan searching for good long term players can be more selective in there recruitment by simply keeping there clan on request, any clan just looking for numbers and are not bothered by who turns up can just leave their clan open.