Phrasing slur collisions

[Marco Caliari]

> I'm not top posting.
Hi,
In the following snippet I collected three phrasing slur collisions

\version "2.11.56"
\paper{ ragged-right=##t }
\relative c'' {
\key f \major
\time 6/8
r4 d8\( g4 aes8 
a!4 
% first collision with the flat symbol
bes8 g4 d'8\)
r8 g,,,16\( c d e f g b d 
% second collision with the natural symbol
b' a
g4 ~ g16 f16 
e4.\)
\stemUp
\times 2/3 
% thirs collision with the "3" of the tuplet
{d16[^\( cis d]} bes4^\)
}
In particular, the third can be eliminated using ( ) instead of \( \).
Is there a way to workaround without using the (tedious) 
#'control-points property? 

Best regards,

Marco