[btrask]

In C you can use [0] for postfix pointer dereferencing.

[abecedarius]

Alas, that's clumsy, and for declarations not possible. I have used it in expressions at times.

Here's a variation that seems plausible: make postfix p^ be like C's p[0], and infix p^i like C's p[i]. (With a tighter binding for ^ than C has.)