I’ve noticed that some things in gt6 are inconsistent when it comes to choice of material and what better materials do. For example a gt6 wooden tank holds 8000L while the more expensive one made with iron rods holds 16000L while remaining the same size. And yes you can argue that its minecraft logic but not exactly.
You see minecraft chests hold 27 item stacks and to make them hold 54 you need a double chest. GT6 chests are made from different metals (some cheap and some are expensive) but they all take up 1 block of space and hold SAME item stacks (which is good in my opinion as it makes sense).
So a lot of mods do this “better metal means better everything” but GT6 should not do that because its supposed to be a consistent mod that “makes sense and balances the game”. I suggest changing all capacity amounts at least to be the same across all metal types or block recipes, tiers ect. And make the space it holds depends on the size of it ingame. Different use of metal could mean something else like durability or resistance to some environment hazard or whatever.
(sorry for shit grammar, im dont feel like typing perfectly right now)