Familiars Presets:
Yeah, the frog was a difficult choice to keep in because without a swim skill or rules for terrain and underwater movement/breathing, amphibious creatures are not special. With them however, I think it was a useful addition, especially given that you could give aquatic bonuses to the wizard when the frog is summoned. Without all that, I agree that frogs are "MEH".
If you do make any special familiars, I'd be interested in hearing about it. Mostly for a critique on whether I was successful in making an easy to extend system or how I failed and what could be improved.
Mounted VFX:
The mounted familiar affect scripts were not included? Crap. Sorry. I forgot about that in my rush to get back to real life. I am very sorry. For Rolo's mounted familiar scripts go to the January 2013 CCC. His stuff is there.