I agree that current situation is a bit out of place when we are taking about glowing effects.
It is totally out of place that common soldiers have these glowing weapons. There is really weird and out of place.
I am also aware from lore that in Tolkien's world, exist glowing weapons, but they are not for world wide use. Only special magical weapons (which weren't so great in numbers) had ability to glow, but only to glow in special situations. So that argument is pretty "out of place" when we speak about upgrades for common soldiers.
So I really find this topic reasonable.
Main problem with weapons is that upgrading process is something which should make weapons stronger in consistency terms (greater damage in game). But how we can present that upgrade that in game?
Glowing effect is one really easy way to do that, I am not so found of it, but I am aware of that. Concerning your suggestions about adding some special symbols above battalions, I am not so found of that, simply I am more for some visual consistency change, and other upgrades don't have this kind of upgrade effect, so I am against it.
The most "logical" thing is to make new models for every single unit, or new skins of weapons which will correspond to forged blades upgrade of that unit. More shining skin etc.
Problem with that (beside it is enormous time consuming job) is also maybe a number of required new weapon's models. So, this is maybe suggestion for some "better" times.
I also want to say that I support idea of making visaul upgrade effects lesser in glow.
That is really something I found reasonable for now. If we take into consideration that different between old, rusty sword (blade) and new one is mostly in metalic shining effect (beside sharpness), I am supporting this suggestion.
Set of colors used in this suggestion is also something which should be discussed.
I would more prefer pale white color instead pale blue for good forces, something which is more correlated with metal shining of new forged blades. About evil forces, I am out of suggestions.
Regards,
CragLord