Maybe I should've phrased it a little bit differently. I didn't intend to argue that they should just sign elite players and coaches immediately - that won't be possible. In general, I always find it a bit irritating if I hear that a club prioritizes the immediate "re-promotion". I get that there's much more money to earn in the first divison but with very few exceptions, a relegation is the result of a continuous negative development. So if you just try to get back into first division as soon as possible through short term measures (signing experienced players, immediate strengthenings, etc.), you took the short cut and most likely - even if you manage to get promoted immediately - just repeat the mistake that lead to your situation in the first place.
It's a too early to judge but these signings indicate this exact mindset, IMO. That a club like Schalke was promoted proves that many things are going significantly wrong in the club and they probably need more than one or two seasons to solve it. But if they sort these things out and launch a project with a real long term plan in mind, a club of their magnitude has an unreal attraction on players and coaches alike. Even in their current situation, they almost landed a high profile manager like Rangnick. That's what I mean. And in this sense, it doesn't really matter if they compete with the HSV or Bremen who are in similar situations. Take your time, rebuild and attack when you've dealt with what was holding you back. And most likely, just by fulfilling your potential in the early days of that project will be enough to get back into the first divison without struggling or fighting your way to a top three position. Break the spiral.