The only sort of climber UAE lacks is a top class domestique like Porte/Poels/Kuss who can outclimb just about anyone on their day. I suppose Almeida could become that guy if he's not careful and Ayuso continues to develop at his current rate.
You'd think a rider with a big engine for the flatlands and the experience be able to reign Pogacar in at times would be their no.1 priority, but who knows what UAE are thinking. Perhaps Wellens can partly fill that role, but if recent form is anything to go on he'll be a great replacement for Trentin instead.
McNulty outclimbed everyone on stage 17. With Ayuso, Almeida and Majka in the team, they are not that bad in this context.
What really makes the difference for Jumbo instead of UAE is a rider like van Aert. If a rider like him is in the break, as a team you have the big advantage that you can try also something on a mountains faraway from the finish like they did at the Col du Calibier without risking something.
Szeanrio 1: Your captain (Vingegaard) is weaker at the Col du Galibier and the other is stronger and gains some time at the Col du Galibier. Van Aert drops back to his captain (Vingegaard) helps him after the mountain on the flat and in the end or before the final mountain the gap is not there anymore and the other rider (Pogacar) spend a lot more energy.
Szenario 2: Your captain (Vingegaard) is stronger then the other captain (Pogacar). Van Aert drops back to his captain (Vingegaard), helps at the flat to extend the advantage to the other rider with your captain spending a lot less energy at the flat then your captain.
Szenario 3: Both captains are equally strong at the Col du Galibier. This is the only szenario where van Aert is not that much help, although this year they just used van Aert to bring back Roglic who got dropped from Vingegaard and Pogacar.
You need a rider for this who has the ability to get into the break (so a rider who can pull on the flat; a lot of stages have a flat beginning), but are also capable of climb at a similar level as good as other breakaway climbers. There are very few riders in the peleton who can do this and Vingegaard has one with van Aert.
If you have a rider in the breakaway like van Aert with a lot of an advantage in a stage, long range attacks from your opponents also become senseless, because the only thing that you have to do is, let your breakaway rider wait and bring him back on the flat while your captain spends less energy then your opponent.