Imagine this you got your trusty Minigun to the big level 100.
But you still see that annoying red 20/20 upgrades taunting you.
What if you could roll all the levels back but for every 50 or so levels you can get an extra upgrade slot.(capping out at the maximum allocation of course)
But what if you already did that?
How about skins where you can use 100 levels or so and get really cool skins that give very small bonuses extra too, like +5% attack speed.