Models shouldn't be a problem. If you have something that can read MDL files, you can simply extract models from G Mod using a resource known as G Mad. You'd have to handle rigging the eyes, body parts, etc. I'd also imagine you'd want to change the tentatively named "Phone Guy's" voice. Actually, I do remember seeing some pony models for FNAF, if I recall correctly. I saw a very morbid Pinkie Pie, but I didn't get the link to her, unfortunately.
Also, listening to my recorded voice from awhile back, I found my voice sounded kinda muffled and stuffy (There were some lines where I should have spoken with a commanding voice, per se. Instead I just kinda muffled it, for an example). I'll try to spare a moment tomorrow when I can re-record louder and "cleaner" takes, and then convert them to .ogg so you can add them whenever you feel necessary. Also, has anyone taking a peek at the new pictures I got for LTF-895? Perhaps using them would cause "Credit" issues and what-not...
Speaking of that, classifying as a very minor addition, I think our mod should have it's own specific "Change Log" and "List of Credits", and the mod have it's own "Version Number". For example, we've been calling the mod V.03B for a long time now. I think it'd be easier to say "The mod is based on the .03B version of SCP- Containment Breach, but is in ____version on it's own." Or something like that. Think about it; some people have been watching this mod for a long time, and some may see that it's still on V.03B, and may be turned away. That's all IMO, though. Also, a change log can help out players new to the mod, to see what's changed, and it'll help me out back at the Wikia
. If everybody's too busy, I could always type up a Change Log and List of Credits.