Retention, pathways, selection

[CaptainSifff]

We have the discussion on retention carried over from #78 , #84 It raises the issue of retaining the good and qualified people @tobyhodges wanted to contribute sth. here that highlights how retaining experienced people is better than constantly replacing them by young and cheap persons. We can work in the notion that we take constant skill-up, which in academia has traditionally been done by the researchers themselves, to a new level, by doing this for our entire domain(See section on structural changes.) Please note, that this also touches the issues of career pathways for RSEs.