I have your mod up and working, and have been playing with it.  Some comments:

1.  Ring of Mana Regen is too cheap.  As a proof of concept it works well though.

2.  Mana regen from shrines  becomes over the top once you get more than 2 or so.  It easily reaches the point that you can teleport whenever you want and cast multiple spells per battle with very little drawdown in mana.

3.  I really like the regen stat being visible somewhere, you have it in the inventory window.

I can now see what the true impact of heavy regen is on the game, and it's very strong.  Can you put in some kind of cap from shrines?  Example:

One Shrine : +1 regen.  This gets you the all important regen TWO, and makes the game a lot less tedious.

Two-Five Shrines:  +0.5 each.  Will ratchet the soverign up +2 more.

After that:  +0.25 each.  Slows down a lot at this point.

I'm playing as the kingdom.  I figured it out that if you mod the entire structure, you get 2 shrines, but if you just mod a part of it, you get only 1.  Not sure which line in the xml code that causes the duplications.  I have moded items, and that was not the behavior there so I guess it was a suprise to me that it's this way when you mod improvements.

Super quick fix for this guys, for those of you who (like me) are not confident modders:

- Create a custom faction in the workshop (don't worry this is really easy)

- Open the xml file in My Documents\My Games\Elemental\Race with notepad

- Near the bottom of the file you will find the line: <A_ManaRegeneration>1</A_ManaRegeneration>

- Change the '1' to whatever mana regen you want

When you start a new game with this faction, you'll have the (strategic not tactical) mana regen you desire, with your sovereign and all units.

It's a pretty rough solution but it has the advantage of being extremely easy!

'nother quick fix, this time just for sovereign *tactical* health or mana regen:

- Create a custom sovereign

- Open the xml file in My Documents\My Games\Elemental\Units with notepad

- Find the line <IsSovereign>1</IsSovereign> near the bottom.

- Just *above* this line, add one of the following (regeneration for health, clarity for mana):

           <SelectedAbilityBonusOption>Regeneration1</SelectedAbilityBonusOption>    

           <SelectedAbilityBonusOption>Clarity1</SelectedAbilityBonusOption>

- Each of these abilities can be from 1 - 5, for the amount of regen per round.

- Restart the game completely once you've made your adjustment.

I tried technophebe's suggestion about creating a new faction and changing the <A_ManaRegeneration>1</A_ManaRegeneration> to <A_ManaRegeneration>3</A_ManaRegeneration>, and it seemed to work when I started a new game as that faction.

Since that appeared to work for the created faction, I looked for the same stat in the configuration for the default factions, but it wasn't there. So I copied the file CoreRaceConfigs.xml to the \My Games\Elemental\RaceTypes\ folder, added the line  <A_ManaRegeneration>3</A_ManaRegeneration> to the RaceConfig section. When I started a new game, Lady Procipinee was regenerating 3 mana per turn. This is out of combat mana regen only. I didn't play long enough to see how it affected other mana using units, but I am hopeful they will also inherit this out of combat mana regen.

Here is an example of how I changed the CoreRaceConfigs.xml file. The example is just for the Amarians, but I made the change to all the core factions.

  <!-- ********************** -->
  <!-- ** Kingdom of Pariden ** -->
  <!-- ********************** -->
  <RaceConfig InternalName="KingdomOfPariden">
    <DisplayName>Kingdom of New Pariden</DisplayName>
    <Capital>New Pariden</Capital>

.

.

.

    <Spellbook>LifeSpellbook</Spellbook>
    <A_ManaRegeneration>3</A_ManaRegeneration>
    <SovereignUnitType>Lady_Procipinee</SovereignUnitType>
    <A_Rations>50</A_Rations>
  </RaceConfig>

I am looking for a similar stat for health, but I haven't been able to find it yet. It seems like the best I can do so far is change the health regen for each unit type individually, as suggest by earlier posts in this thread. Please let me know if you stumble across a more global setting.

Health regen is simple, there is a global variable in coreunitstats.xml I believe.

Tried this out and it works great. Many thanks! The key of course is to start a new game, doesn't help an existing game at all.