OK, I DL'd it and took a look.
It has great possibilities if one is NOT using similar mods already which do the same sorts of things.
One really doesn't want to install 20 assorted terraforming mods which improve the planet PQ excessively. The player has to pick and choose when given several of the same sorts of mods to choose from. This is, of course, if you don't want to depart too extremely from the original flavor of the game and it's basic play balance.
The Seldon mod uses existing MDL files, except the monsterious mod by Amaymon (which I also use, and have improved, giving the Leviathan its own MDL so it doesn't color up and look just like the regular monsters). There are NO truely new ship graphics. There are number of interesting ships offered and perhaps I'll make unique ship MDL graphic files for them and add them to my own on-line mod collection... completely play-balanced with all the other ships.
The mod offers lots of improvement mods as well. Again, many of these duplicate mod effects already available in other mods which I already use or have created on my own -- still... there are some possibilities.
Ditto to the new technologies offered.
This looks like a great "theme" mod which would be a fine addition to a player's game if not already using too many other mods; especailly not using mods which duplicate the effects of the Seldon mods.
Myself? I prefer no real hard core theme type of mods packages. For example, I use ideas from Star Trek, Far Scape, Star Gate, Star Wars, B5, various space games, and other TV SciFi shows. I like to use an assortment of mods together (play balanced as much as practical; i.e., making minor adjustments to the mods). In my own over-all game configuration I use the orginal ships as they are plus new ships (with thier own seperate graphics); and use various tech, party, and imp mods.
Below is a list of mods I use and/or where adapted for use (some these mods are big on there own - some may have been updated by the original authors after my abtaining them for use):
Nanotechnology by JesusOfBorg (this mod was greatly added onto by me for the extensive Borg modifications made for "evil" players; includes ship graphics, improvements, and new technology paths)
Malleus Xeno Religious Thought by Malleus
Improvements by MrKorx
The Great Institutes by Icho Tolot (a really nice mod)
Culture Capital by Yordrony8888
Religious Capital by Yordrony8888
Good/Evil Improvement Pak by Nand1 (and Bpeshek and Kryofx - this is a large mod package, very good)
Enhanced Terrorforming by JesusOfBorg (don't need other PQ mods if using this mod)
New Improvements 2 by Nand1 (nice mod, lots of goodies)
New Improvements by Nand1 (ditto)
Subspace Travelling by Yordrony8888
Taquionic Field by Yordrony8888
The Force Teck Pak by Jedi Master Yoda
Metallized Skin by LBytes
Extended Invasion Strategies by Malleus
Smuggling by Frogboy (for evil players)
Vorlon Dreadnought ship (adapted) orginally by Coplann
WhiteStar Ranger ship by Coplann
The Monstrous Mod by Amaymon (and Turgoz Z; added more graphics by me)
Tactical Missile by Yuri1971 and MDL by me
Photon Mines MK1 and MK2 by Andre O (and MDLs by me)
New Domestic Governer Graphic (General Hammond) by Darth Griffin
Jedi Party by Grand Admiral Sherbert
The Evil Pack by Icho Tolot (another nice large mod with lots of goodies)
Research Inc Party by Darth Griffin
Gross Empire Party by Yordrony8888
Weather Control Pack by Grand Admiral Sherbert
Scorched Earth by Morden (a must have, but I improved it an made it cost a lot)
Plus lots of new Ship data files and Graphic MDLs, some helpful ideas and some initial graphics from Amaymon, Icho Tolot, and others.
Plus New Telapathic Technology paths and Parties for players aligned "good" --- by me (to counter the late-game Borg mods).
Spy Master Party, Theocrat Party, and Environmentalist Party done by me.
Plus --- I'm always looking for recommendations for what other mods (or parts of large mod collections) to add to this collection. I would be interested in which UP_Issues, Anomaly and Event mods might be worth adding. I'm looking at adding Icho's Halut ship pack mod to my collect. It apparently uses unique new ship graphic MDLs; I only recently saw it the Libary; err, perhaps some of the ships can be made to be "plac-holders" for some of the Seldon ships (need to investigate).