What should Landa do now?
This guy is just about the most consistent climber in GT's. He just always finds a way to lose silly serious time somewhere. But this season he has placed fourth in the Giro, not far off the podium; and now sixth at the Tour, where without the time lost in the crash/crosswinds, he would be within a minute of the podium. Considering that nobody else who did the Giro did well in the Tour, could he have won the Tour if he didn't ride the Giro? If you take away stage 10, he wouldn't have had to have been all that much stronger to have taken yellow.
2015, strongest in the third week in the Giro, finishers third. Later that season he wasn't competitive in the GC in the Vuelta, but still won the Queen stage. In 2016 he was ill in the Tour from memory, and in the 2017 Giro he suffered more bad luck which took him out of GC calculations, yet he still continued on to win two stages in the mountains. And with that race in his legs, he places fourth in the Tour, one second off the podium.
It just seems like Landa should win a GT one day. From now on maybe he should just go Giro/Vuelta every season. Two chances a year; he probably has a few more years to contend. The odds are that at some stage the stars will align for him I think.