Grimrock

One thing I miss from Beholders and similar is... MORE magic. MORE MORE MORE magic.

In Grimrock, magic is (almost) solely used for direct combat damage. True, there are some Fire and other Shields, but they're effective against one type of enemy, and one fireball trap only. True, there is one puzzle solved through casting a fireball. And that's it.

I miss "true sight" for illusionary walls. I miss invisible enemies. I miss levitation over pits. I miss scaring enemies off, when cornered (Turn Undead or Fear). I miss "Detect Magic" used to discover hidden properties of items/objects. I miss "Dispel Magic" for removing harmful effects or obstacles.

Potions... I made like one or two, never needed more. I slept my poisons and illnesses off. I miss having to find/make (nod to Grimrock for this being new) a potion to pass something (protection from a Medusa sight, or something).

I miss magical jewelry allowing one to pass some test. I miss specific weapons ineffective/super-effective against specific enemies (save for the last boss in Grimrock, of course).

In other words - I hope future expansions will get more magical variety :]

Keep in mind the game doesn't require any specific party makeup, so you might not actually have a mage during your game. As such, spells that help you find/understand/remove stuff is kind of hard to justify.

Levitate would be a bad idea since pit trap puzzles would be pointless if you had the right spell.

If I was asking for more spells, I'd probably have to ask for healing magic of some kind.