I don't have enough experience with haks to judge any of this (and especially not with these particular ones, I just found them on NWVault) but you should keep in mind that using content made for versions prior to 1.69 may in some cases lead to problems when you're using 1.69. From what I hear, the patch made some significant changes that might occasionally cause incompatibility with older stuff that hasn't been updated to 1.69 (and horses are a 1.69 thing, if I'm not mistaken).
The dragons overriding the rats could probably be fixed by editing the appearances.2da. Just a guess, someone more tech-savvy from the Custom Content forum might be able to help you with that.
Btw, if you're already using 1.69, you should be able to scale down the default dragons without adding any haks. In order to do this, you have to open the creature's property window and on the "Basic" tab change its appearance to one of the "Invisible" options, e.g. "Invisible_Dragon_20" (this will shrink the creature in question to a size that's only 20% of your average dragon). Then switch to the "Appearance" tab and click on the "Tail" menu. Here you get to choose the shrinked creature's appearance. Scroll down and select the dragon of your choice (make sure you don't just select one of the default dragon tails but a complete appearance, they're a bit further down the list). Click OK and you've got your dragon shrinked to 20%.
In the same way you can also enlarge creatures. It should work on all default models except for those you can customize (e.g. you can't craft an individual human NPC, equip it with items and then shrink or enlarge it, but you can do it with a pre-made human model like BioWare's Beggar or Boy or whatever).
Modifié par olivier leroux, 18 juin 2011 - 10:07 .
