Embedded Tuplets

[Carl McTague]

Dear Lilypond Hackers,

would it be possible for the brackets of embedded tuplet groups not to
run into one another in scores---to be separated vertically?  I'm
referring, for example, to the following type of situation:

  \times 2/3 {\times 4/5 {...} ...}

Currently LilyPond places the numbers and braces on top of one
another.

Also, would it be possible to have the option of explicit notation of
tuplet ratios?  That is, in place of `3' and `5' in the above example,
`3:2' and `5:4', respectively.  (As in Stone 132.)

Carl McTague