I'll have to buy you a drink when/if I ever get to Britain, then, and hopefully that will make up for it.

Bingo on Pinkie Pie. They're not very similar in style at first glance, but they do serve similar functions sometimes, especially in Swarm of the Century.

No cross-cast is going to be perfect. I saw his Avengers videos, and of course there have been a lot of those crossover lately. RD is practically a perfect cast as Tony Stark, but I have to agree with the people who cast Fluttershy as The Hulk.