I think we will see a different Schachmann then in the spring already at the tour de suisse..
He just got unlucky with the start of the season, but I think for him the new leaders at Bora are not that much of a problem as he is right now not concerned wit GT leadership. Of course Vlasov and Higuita can do good results in races Schachmann targets as well, but it's not a bad idea to have 2-3 leaders for the Ardennes for example. Schachmann benefitted in 2019 from Formolo for the 3rd place in LBL. The rest of the season is I think pretty straight forward for him: stage hunting at TdS, Tour de France and I think winning the Deutschland Tour as well. Afterwards he could be focusing on the worlds and maybe Lombardia. The situation is way worse for Buchmann who could even think. about leavin if he isn't able to get a GT leader role at Bora anymore. For Kämna it shouldn't be a close call - he should stay. Bora is for sure motivated to give him a good salary and all other big teams would chain him into a pure support rider. I could only see Quick Step as quite logical but Bora has for sure the deeper pockets.
The Bora Team for Suisse is really loaded if Procycling is correct: Vlasov, Higuita, Großschartner, Schachmann. Will be an interesting race against Remco and a strong Ineos squad.
I also suspect (and expect) a change of plans for the Vuelta for Bora. The should try to bring a second leader besides Higuita and give them a decent supporting cast that can limit the gaps in the TTT and brings some real mountain support. The Vuelta was more of a development race in the last years, but I don't know if you can defend that choice when you look at the results from the GC Guys. They also can't staff all strong guys into the TdF and why only let the strong GT riders only ride one GT per year?
I would say Higuita+ Hindley (as leader), Buchmann or Kelderman (as BackUp leader/mountain domestiques) with a couple out of Mullen, Haller, Pöstlberger or Gamper (depending on Tour choices). and then some additional climby boys like Zwiehoff, Fabbro,Kämna, Konrad, Großschartner. I mean what races should all those guys go to in the autumn? The can't end their season mid August and Bora can't send everyone to the Deutschland Tour, Pologne and the Italian classics. Just go for the next GT even if the field is stronger then. That leaves no place for Wandahl, Palzer, Meuus or Walls in the squad but it's not like their results warrant a GT spot. The same could be very well true for Pösti and Fabbro if thea don't show any form until august.