Well, i dont use super soil so dont know how much of what it cointains, you will also have to get the soil to transfer the nutes to the lower part of the soil with water,,but you know this,
lime will buffer the ph, so the ph certainly isnt an issue, and depending on the type of lime, it may contain cal and magnesium, but depending on the type and grade( fine,course, flour etc) will vary its avaiblity,some course and large lime can take years to become avaible, but the lime and ph aint the problem ay,,,
and if you are using the soil as a mulch it would eventually get to the roots, just not as quickly as applying it through a fert or tea,,
on the soil amendment front, mineral amendments maybe ph neutral but cointain few avaible nutrients, they decompose by ersion and weathering, taking time to release the good stuff, once again you probly know this,
this page may help,,,
http://www.ghorganics.com/page32.html, it suggest bone meal as a source of iron,, but i know cow and chicken manure also cointains big amounts of iron, but once again it will take abit of time to become rotted enough not to burn foilage,,if you wanted to foilar feed it the iron. Also iron is immoble, hence why he young leaves show signs first. And high levels of iron dont really damage the plant but it will interfere with the up take of phosphorus, i say wont really hurt but too much of anything will,,
Sorry if im all over the place, im alittle baked.