I'm trying to wrap my head around why some spells don't stack. I can understand the desire to keep it all balanced but. You worked hard to remort, get a second class, but some of the spells/skills from that second class aren't worth the damn to you because you have another skill that affects the same stat.

For example, why doesn't temporal compression and haste stack? Someone said in game because they do they same thing…no they don't, they affect the same stat but what each spell does is not the same.
Temporal Compression from the help file says that it slows time around the target, allowing them to react faster. Target is not moving faster, but time around him is moving slower, which is why he can react to it easier.
Haste, caster uses magical energies to make the target faster. So haste actually makes the target move faster, that is not the same as slowing time down.
Put together, you get a target with time moving slower around them while their body is actually moving faster then normal.

I know people would whine…so and so can do this faster then me boo hooo…thats life. With the limiting of spell effects on gear, +mage on haste gear, +psi on nopain gear, +cleric on sanc gear. The only way to have both of them reliably is to have that class combination. It should be considered a benefit to remorting and choosing that class.

AND now let the people shoot down the idea, or go on about "they are the same" "it wouldn't be balanced" or the always classic sarcastic remarks.

You may have predicted the shoot down and the sarcastic remarks but it doesn't stop us from doing it still.

I think when people were saying, 'it's the same thing' - they really were talking about the physicist side of the faster/slower just to be a more logically explained reason, where as "magical energies", bend the same laws that the physicist do, it's not like there's a different set of laws.

One is temporal, it's bent in a temporal sense, and if you try and bend it in a magical sense, it would be like holding a piece of paper and folding it in half, then holding that piece of folded paper and grabbing where the paper would be if it wasn't folded and made the same fold gesture, and regrasped the already folded paper. If you do both folds, and undo one fold either by dispel or nulli, the paper will stay folded because there is still one fold left to undo. You can't refold the same laws of magic, but you have to unfold both to unfold the piece of paper.

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That's how it is currently.

If temp comp got reworked to set 'temp comp' instead of haste, and the same with temp dia, it would change some things in terms of balance, sure,

Few ?'s ..are you going to allow temp comp to be set on eq? So everyone can run with double-hasten? or just full or part-time physicists who can alter it, and get haste from eq or being part mage?

What other skill/spell stacking do you have in mind? Divine armor casting as cleric and armor casting as mage? Why not, right? One is from a diety, and the other is from material spell components :p ..would need a newer name, 'armor of the diety', or maybe another name that doesn't suck :p

There's just no getting away from it. Having someone with double the effect of 'haste' just sounds like serious balance issues. Just think about how it is with and without haste. But changing temporal compression so it does something other than giving 'haste' so it does stack, well…that's right up my alley. So here it is:

Temporal compression gives the next action a decrease in waitstate. Uses: support, use right before you econvert one of those batteries that gives 2000+ mana.

Same concept for temporal dilation, it would give an increase to the victim's next action. Uses: lecture then temporal dilation, gravity well then temporal dilation. Note that it wouldn't be like adding waitstate (deathtouch) as if a monk were to deathtouch a sitting opponent and the dude would stay on the floor longer. If the physic used temporal dilation on a sitting opponent, then the opponent would simply have to wait a bit longer after they stand to perform their next action (assuming they stood after being knocked down).

How much waitstate is just balance tweaking. And, it might be a good idea to make it remort alterations (gen 6 and gen 8, respectively) 'cause it seems like prime physics need a boost in popularity.

Back to the actual topic…sounds like your main issue is getting the idea of it to settle. But the main issue is balance, like I've said before there's just no getting away from it. When it down to balance issues, I'd think it's pretty safe to say about 9 out of 10 people will have haste and temporal compression. There aren't a whole lot but of what there is haste on non +mage eq is quite abundant. Also, if you're not part phys yourself it's a good chance that the dude you're grouping with is part phys. It'd definitely change leveling and player vs. mob situations.