When I am sitting down, and cast a spell, please make me automatically stand up.
 

It's classic and I'm literally damaging my wrist not having this!

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You can make a hot key that does that. And you can get far more complex than that.

Macro it,

/stand
/cast 1 to 8 (1 to 8 referring to your spell slot)

Yeah this was a pretty annoying change. Even if technically classic or not for this period, it really just represents a needless step backwards in terms of quality-of-life features.

Quality of life isn't classic.

..as if caster weren't already lazy enough

/sit off
/cast 1
/cast 1 (in case of fizzle)

not classic

I concur

This guy gets it.

/stand isn't classic. /sit off is!!!

And confirmed. Standing to cast isn't classic and makes the game easier. Having to do two keys to do something slows down the speed at which you can play. Or you can make hotkeys for casts but you need to have room for those hotkeys. If you're running with a classic single hot button box it's unlikely you have room unless you're tabbing between pages.

There's plenty of quality-of-life features that aren't classic for the era. And lots of good casters spend ridiculous amounts of time and extra clicks spell swapping. Unnecessary tedium on top of tedium.