Wow I just realized that I presumed that TortoiseGit added the correct component files (I changed the TPAs before release). I am so sorry. The newest update should make the mod work now.
It's hard to find information on 2nd Edition Monster Summoning, I found this when I was still developing my mod: https://forums.pocketplane.net/index.php?topic=17814.50. It seems like Monster Summoning works nearly like it did in PnP as it does in Icewind Dale, and by extension Baldur's gate with Iwdification and/or SCS. It is also unfortunately means that these kind of Monster Summonings fall in the bottom of the spell tier lists for Baldur's Gate/Icewind Dale due to the fact of there being better options for summons, spell-wise or item-wise. That is why SR's Monster Summoning, and this mod, is massively buffed.
On to the matter of horde creature balance, I recently played a full 4-game playthrough of Baldur's Gate with this mod, to test it before publishing it. Insane SCS Ascension Modded with SR, and I found the balance was surprisingly good (I thought it was going to be chaotically imbalanced). The lower level monsters, as usefull as they can be, still get carved by AOE, miss alot because they have low THAC0, or get cramped because BG1 and Shadows of Amn have a lot of tight fighting places. I found the higher level monsters were more practical until late Shadows of Amn/Throne of Bhaal. To be fair, I had a melee heavy party, so this is probably a different story with a ranged party. But with that said I was thinking about adding a nerfed version, like decreasing the duration. At the moment the duration is 3 turns, so I could lower it to like 1 turn + 1 round/level, or just have it be 1 round/level. But still, thank you for the suggestion; its a neat idea.
The idea of "where would summoned humanoids/demihumans come from" has always persisted in my thoughts since I was a kid. These included: They were magically whisked to the summoner, willingly or unwillingly, then dominated by the caster until the summon dissipates, being summoned from another dimension, or simply being created for a time.
Yea, half-ogres are in the Level 3 Creature Summoning Table. There is a folder in the download which has the documentation of all the creatures and their statistics.
I use the normal gender (male, female, neither) in the bypassed summon limit creatures. I state in the spell description that they are "immune" to spells like Banishment because of this. I am thinking of eventually doing something like make a custom gender, then append that gender to these creatures and spells like Banishment, as well as AI adjustments.