I would say BORA's criticised transfer policy has not worked out too bad thus far.
Yes the highlights of the season did come from actual transfers (Higuita, Vlasov, Hindley) or Kämna, who feels like a transfer after missing almost a year.
They badly needed such a victory. Higuita is really quite better than in the last years with EF. That was a really strong performance against guys from the second row of GC contenders. This incredible raid yesterday and today not one sign of weakness.
The rest of the team is really weak as of right now (injuries, slow form build up, sickness). The classics team ist totally done for. Koch 22nd today, Haller 50th at MSR - no chance to something at the Ronde and Roubaix. All their sprinters are also totally out of form. Bennett seems to be miles away from the top sprinter he once was. Some of the more promising riders like Schelling, Fabbro and Aleotti are nowhere right now. It's not communicated who is/was sick and races through some bad legs, but all in all the situation right now ist pretty bleak in my eyes (of course just for some of the upcoming main goals of the season, long-term is another thing). Maybe they get a change of heart when it comes to their set-up for the Ardennes, the Giro and the Tour. Vlasov isn't able to go with the Top Guys for GC and my faith in Bennett/Schachmann is very low atm. For the Giro they have their strong climbers squad who maybe doesn't feature their strong climbers at all. Kelderman and Buchmann were a disappointment so far. I'm not sure Fabbro and Aleotti are deserving of a GT spot and if that's because of sickness the build up to the giro is very short to fix that.
Higuita for the Vuelta was a good plan, but maybe they should consider including him into the Giro. Also Palzer and Wandahl should get a look as support rider. They lack GT experience and maybe the Giro is then a bridge too far, but they are having a fine season. The next race for Higuita is Itzulia. Bora is there with a line-up that reads like a pretty good Team (but not yet confirmed). Higuita, Vlasov, Buchmann, Palzer, Wandahl, Kämna, Grossschartner (out with collarbone, so the list will be updated in the future). If Higuita goes toe to toe with Roglic, Evenepoel and Matrinez he would give Aldag certainly something to think about. Especially if he continues to outclass the GC Guys in his own team. Even Hindley didn't had this kind of performance this year. He raced very well but more in a clear support role. The 5 spot at T-A is nice but he wasn't really ion contention there like Vlasov and Higuita are on WT-Level.