Will we ever be able to exchange old heirlooms for shards?

I got my first and only heirloom in like, season three or something. Lifeline's shocksticks. I have played lifeline maybe a total of 11 times of my own volition. The season after that they introduced shards. I find it really unfair that the only time I (and many others) were lucky enough to pull a mythic (or spend hundreds trying to get the one they wanted) it's for a character I hate, just to have the option to PICK the heirloom you wanted introduced literally months later. Lifeline is not my playstyle and never will be, I don't enjoy playing her. I know for a fact I'm not close to pulling another one and I don't have $500 to blow on a mythic meanwhile I have a useless heirloom that I don't like and never see just sitting on a character I have probably less than one total hour of playtime on and other people have universal heirlooms they can use on whoever they want just because they were lucky enough to pull shards like a month and a half after I did and saved them. Is there any chance at all we'll be able to trade in old heirlooms for shards or exchange old ones for new ones? I would even trade in Lifeline's for one that's not universal, if that's "fairer" given their overall value. I just want one I'll actually get to use and look at.