Outdate Description of some peaks in SOLW
Description of Pyromaniac, Devils Luck, Anatomist & GTS:Extra Munitions are wrong. The first three descriptions dont update in the latest edition. The GTS of Brigadier say all soldiers gain a free grenade, but it dont. Cause I didnt try Included Mods yet, I dont know what Brigadier GTS is.

Peaks regroup
Pioneer Engineer is a crit hit expert that every peak is efficient on killing. Smoke peaks, Entrench & Enand and Controlled Detonation from Sapper tree, seems most player will ignore. However Fastball, HEAT & DangerZone are popular choice. The key peaks in middle tree are H&G, Close Combat Specialist and Mayhem. In general, specific powerful peaks of Pioneer should move to another tree for balance purpose. So, let`s discuss peaks regroup between rank and tree.

Corporal
Hit and Run, which let your soldier move after using first AP for shoot or grenade. That seems limited. For using Grenade effectively, you should always Grenade after blue move. In additional, Fastball could Grenade twice after move. Hit and Run style peak for SnarpShooter/Hunter is good, but Shotgun class will suit Run and Gun more. So, replace H&R by R&G is a solution here.

Sergeant
Slug Shot is bad. Buff this peak or replace by something usefull, such as Iron Will. Iron Will would be usefull for Close Combat Specialist later.
Lieutenant In this rank, Focused Defense is a passive peak that add 30 defense and 50 dodge to the closest enemy. Moving Target is a anti overwatch peak too. Both passive peak are great. Why I should learn a hunkdown peak? I only use Hunkdown for my VIP.

Captain
Anatomist should move in this rank. Because Anatomist, Aggression and SlamFire combination are very OP.