Hi just dropping a little idea again.
Current fusion upgrade system is awesome, but could maybe use a little tweaking. Would be cool if you could choose to upgrade a item in different ways, for example either improve an electric weapons damage, or it's energy drain. This would allow more unique items, and add more variety in the weapons altogether. Same concept could be used for torsos and legs too, for example improve legs to give more hit points, or to give more stomp damage.
Hope i made clear the basic idea behind this, sure it still needs some developing..
Cheers