Most likely. EMS definitely has some problems (like Stoneskin giving permanent critical immunity against enemies with +5 weapons or better, Premonition being 70% physical immunity at level 35, etc) but would probably focus on just tweaking those if necessary. Things like the auto empower/maximize are interesting and it also actually makes spells like Meteor Swarm worth using instead of spamming IGMS.
I'd never use EMS in a module from scratch, mind you, would simply adjust the spells myself (which I've done elsewhere)...but given that it's already in Aielund...
I love and hate EMS. Most of the modifications are really good. But aside from those problems, there is a matter of inconvenience. Unfortunately, many (all?) of the modifications made by EMS are not reflected in in-game descriptions. And the attached text file is somewhat vague and slightly outdated. It is often hard to ascertain how a spell actually works in current environment.
Disables sequencers, yes, but hadn't heard about the Immune to Spells of X level or lower, I'll look into that.
Most players just did not notice, I guess. At the time when the PC gains the Terinus's belt, he is already at epic level and thus, L6 or lower spells are not the most significant dangers anymore. Also, the shield is just one of the choices. I found this aspect when I played a Shifter in the Aielund Saga. Rakshasa form did not prevent any of the spells (it is meant to be immune to spells of 8th level or lower). Then, I have actually tested the belt and the shield in the game. They did not work. IIRC Globe of Invulnerability spells did not work either.
Every time I've looked at PRC in the past it's just been ridiculously overpowered. If you have a current link to the changes/features of 3.5 I can take a long at it but the odds of trying to incorporate that into Aielund are pretty low.
The current version (3.5) of PRC is found here.
http://neverwinterva...ms-prc-pack-v35
And the online manual is here.
http://www.athasreborn.com/prc/manual/
In regard to being overpowered, many of the aspects can be set by switches. And by enabling racial HDs and LA emulation, monster races does not automatically become more powerful than basic races. There are switches for modifying some spells, too.
I guess a module builder can make it so that certain switches are set at the beginning of the modules. Or, at least, you can include a customized personal_switch.2da file in the zip file and encourage players to import that via PRC options menu.
Some of the switches can be used for changing how some type of items work. My favorite one is to emulate DnD 3.5e magic staff. A PC can use his caster level and spellcasting stat modifier for using a magic staff. That will largely improve the value of some items in the Aielund Saga. Usually, magical staffs are not as useful as wands as a PC should equip it as a weapon.
If you are interested in it, see this thread in PRC site for how to make personal switch file.
http://prc.athasrebo...opic,309.0.html
Another concern may be item creations and epic spells. But they costs both XPs and GPs to create or reserch. So, a PC does not level up as fast as usual if he makes too many items or research powerful epic spells. Also, unless the player use cheat code for giving millions of golds, a PC cannot make game-breaking ones.