To Hord or Not To Hord

I would say if you're trying to level up a toon that requires get or get2, hold onto the tokens at least until you can bring them to the next star level, if not 7*. There's no advantage in having a 5* malak with 45/85 shards. You can just hold onto the get until you can upgrade him, just in case your priorities change.

Worse case it might take an extra day or two to promote them when the time comes since you have to wait for the store to refresh.