Was wondering what if each weapon swap bar had 4 skills and an elite instead of 5 skills and an elite. And then the two skills that were removed were put as persistent slots on the side that would always be available regardless of what weapon bar is up. It would make things tactical too.
You could put Guard on it so that Guard doesn't break on weapon swap. Could put pets in the slots so that they don't have to taking up so many spaces. Could put skills with passives so the passives are always active. Lots of decisions to make when deciding what two skills would go there!
Below is a little image showing the positions. 1 and 2 are the universal skills. Then the two weapon bars with 4 skills and a ultimate. It is the same number of slots overall just creating tactical options and adding some QoL to reduce all the swapping just to recast buffs, etc.

For programming purposes the 2 universal slots are basically on both weapon bars, so it'd be like whatever ability is in those two slots gets secretly slotted on both weapon bars even though the UI just shows them as persistent.