I'll probably switch my cipher class to utilize more long range attacks.
Do you know how to arrange your party so that some characters can be the ones that stand in front?
What does the recovery percentage from armor mean?
Recovery percentage refers to how quickly your character can take actions. Whenever your characters do something, a bar at the top slowly whittles down until it allows your character to take another action. This could range from things like using abilities, using spells or just standard attacking. So say, the heavier your armour, the slower your recovery time, meaning that you have to wait longer between actions (attacks, abilities, etc). Mobility v Protection.
As for formations, you can click the formation button at the bottom of the screen. You can also right click one of the two custom formation buttons in order to create and customise your own formation rather than the defaults.
IMO, the best balance is 2 meatsuits and 4 ranged damage dealers, each with some manageable level of CC (the best IMO belonging to the Cipher).
This tends to be my playstyle too.
Tanks (Paladin and Chanter) in the front row. Rogue, Cipher, Druid and Ranger in my back row. Pet dead centre between the two rows, as a last resort to protect the back row with takedown. I'm using a Lion pet, and his Roar can affect the enemies charging at my meatshields, so he's not completely useless if he isn't engaged in melee.
The Rogue and Cipher on the sides since they can handle themselves in Melee if necessary while the Druid and Ranger in the middle as the squishiest in my group. Could easily substitute my Ranger for a Priest or Wizard, the idea is the same. It's a pretty basic formation and sometimes I have to change it up indoors, but it works quite well for me. It's not a universal opinion, but I like the engagement mechanics for this reason. Formation and positioning are difficult to make work as genuine gameplay components in party based RPGs that aren't turn based. So I support endeavours to make them more important.
That said, I can't figure out how to make the party move as a formation or if it's even possible. I would really like it if I could do that tbh.