Actually, it would make for more readable code if Perl6 made it so that:

$obj a b c(d,e) f
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meant the same as Perl5's

$obj->a->b->c(d,e)->f
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or the proposed

$obj.a.b.c(d,e).f
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I hope that perl6 drops the confusing bareword notation for functions (as opposed to method calls), though. Having a b c d mean the same as a(b(c(d()))) causes you to have to suddenly start reading from right to left to track the order of program execution, even though the rest of Perl is left-to-right.