I mostly agree. However, if the club were to say to Still "we have this/these coach/es who have very good reputations, who have worked with the first team and know the club inside out. We think they are an asset and we'd like them to remain involved for the sake of continuity" and he turned them down flat, I think that would indicate a lack of willingness to work with the club (and possible an element of arrogance and/or cowardice).
I keep seeing people suggesting that appointing Still means that the club are being more 'flexible'. Aside from the fact that I don't believe that the club are as rigid as people have made out, I think it would be unhealthy for Still to completely dictate how things are run.