To get better linemates, you need to show you deserve better linemates by creating chances with what you have.
Remember early on when it seemed Coyle was gifted better linemates and Granlund got stuck with crap? Granlund showed he deserved better linemates, and continues to show it and thus gets it. When he started the season with Staal and Zucker, but neither were playing up to par and Granlund looked to be playing on an island trying to carry the line by himself, what happened? He got moved over to a pair of linemates that were carrying their weight, and look at the result.
Ek doesn't ever seem all that dangerous even by 4th line standards right now, so why would he get better linemates yet?