Instead of imbricate IF, it could be usefull to be able to make several tests inside an if call.
Something like this :
[[!If?
&subject=[[+name]]
&operator=EQ
&operand=George
&if2=OR
&subject2=[[+name]]
&operator2=EQ
&operand2=Bob
&if3=OR
&subject2=[[+name]]
&operator2=EQ
&operand2=John
&then=Hey my friends !
&else=Sorry I don't know you. Go away.
]]
I'm not sure is the best way to call the parameter, but it's OMHO the only think it's missing to this usefull addon :)