Engineer III should be able to build everything Engineer II can, unique hybrid high caliber AT/AA guns, and most importantly ladders for hard to reach areas so the game will have new avenue of approaches other than those dictated by map design.
I am so bored with the usual avenues of approaches presented within the map and i think the ladders will be awesome in maps like Berlin, Stalingrad, Burma, and maybe future urban maps like Arnhem, Manila, and Singapore
I don’t see the point of locking those features on high level squad tbh. It just increases the grind and give more advantage to veteran player who use the squad against newbie.
There is enough variety of heavy weapon emplacements to justify a whole new tech tree per nation. Would allow for even more customization as choices could be made in which AT guns could be assigned to individual squads rather than an automatic high tier or low tier gun being given.