I have a hunch that the legendary cards are going to be more important once we get the modern rotation, and I am in fact using them more than I would have expected, even if they are mostly at level 3 for me. Emberguard, Gallicus, Death Ranger and to a lesser extent the 1 mana cards, are in play for me.

My own glint strategy has revolved around completing the whole set, which means doing a significant number of legendary draws. Legendary draws are less exciting than chests, but I feel they are necessary.

I did in fact make a little program that tells me how to spend my glint depending on my current progress (with the goal of completing the regular foil set). With your progress it currently suggests to buy:

1. Legendary draw batch 1
2. Legendary draw batch 2
3. Major chest batch 1
4. Ultimate chest batch 1
5. Minor chest batch 1

I don't know about that second batch of legendary draws, but its what the program wants.