Melker is a step above anyone on the Cuda in terms of complete package. The Cuda players are all at this point unproven, only Timo is really proving himself. Even Labanc is frankly dogging it right now. Carpenter is doing great but didn't knock any socks off at the NHL level (granted, very limited chance).
His motor counts for a LOT IMO on a team that continues to age, and in this league speed and motor are counting more and more. But Melker also brings some veteran experience which is important on a team looking to integrate some big, young pieces, especially ones like Donskoi that could go either way. And the young guys need a good example to follow.
Melker worked well on almost every line he played on because of his motor and overall skills, he could keep up skillwise in general and made room for others with his activity on the ice. That is a versatile, valuable player.