Thanks all, and my apologies but good answers/discussions tend to drive more questions.
Consider a spell like 'Knock', which acts upon a specific class of objects. If Knock in the normal rules created a force that pulled on the door, or summoned a mystical lime golem that opened the door, I could create them in EoM. But Knock does a very specific one thing, and via a mechanism that I can seem to find in EoM.
Does everyone just drop these spells, so wizards who want to open doors have to create the form of that opening from existing lists?
I was considering trying to figure out for each spell from the PH that I honestly could not recreate in EoM the specific spell list or lists that are 'close enough', and allow players to take those spells if and only if:
1) They have those lists I have determined,
2) They take it as a signature spell only
3) They pay (level +1) x 2 Magic Points
Will this work? Could I also consider these 'ancient and mysterious formulae', so there would be a 4th requirement
4) The formula for the spell would have to be found on scroll, book, etc.
I know that I'm risking balance, but I'm still stuck on that idea of keeping the 'hallmark' D&D spells in place.