Commanders could really use buffs. The modules could be either cheaper or simply scale better in stats. Some of the speed maluses could be removed, or at least reduced and fire damage should scale with damage modules.
Currently commanders have the worst performance to metal ratio and losing one in battle will impact economy, which further discourages using Comms in active battle. The metal spent on commanders is always better spent on other units, whether they are factory standard or striders.
Even combat oriented guard commander can't achieve the same combination of damage, range, speed and health as Dante with same metal investment.
I swear, if commanders didn't have economy tied to them, people would gladly reclaim their own commanders after expansion to get better units for cost.
Overral, there is also a problem with the viability between different commander chassisses. Recon commander is generally the best since it has ability to jump and other than that, the commanders have only some mild differences in starting health and movement speed, and of course some small differences coming from upgrading commander. Most of the variety comes from different module options between chassisses, but since it was already stated that those are waste of metal, they aren't really used.
Leveling the commander up costs metal even without modules eventhough some of the chassisses, such as guardian don't even have level up bonus like the engineers +2 building power.
Overral, it is possible to get level 4 module with around 800 metal investment if you only take the level 2 weapon change and the level 4 weapon module, which is pretty good deal. But if you try to take any of the module updates, which give marginal 10% (if even that, with maluses negated from the buffs they are really low overral) the price hikes easily to many thousands units of metal for barely any benefit.
Also, could the 5 metal cost removed from the level 2 beam laser wapon update? since the commanders now start already with beam laser and it is 5 metal cheaper to not pick any weapon upgrade rather than selecting the beam laser at level 2.