Plz do add Certus Quartz and Quartz singularities in case the sky stone and soul sand is slow to get.
Also do check some of the recipies of induction smelter. Some cannot use ingots as ingredient. The example is electrum. (The next page is its powder to its ingot)

And nickel ingot can only be smelted in tinker smelter to double its outcome, hope adding crushing recipe in mek machines

I will not be adding the suggested quartz singularities. There are other ways to get them quite easily (check the sieving drops from dust with a decent mesh). Sure, there's a bit of processing required, but not everything needs a singularity.

I've added nickel chunks to the Enrichment Chamber (which is where most of the other Ex Nihilo Sequentia chunks give 2 dusts - not in the crusher you mentioned), and have also allowed for invar and electrum to be made from ingots only (in addition to the current of ingot & dust recipes).

This will be coming in release 0.2.10

Released in v0.2.10

Just my own opinion, alloys are much easier to be made in induction smelter than certus quartz ,as the sieving produces many other outcome. If certus singularity will not be added , I recommend a late-game recipe where there is only one or two outcome ,which would be much more friendly to manufactory. @CuboidDroid