As a general feedback to the draft document page, not specific to
2012-03, I find it preferable if the «original text» and «new text»
boxes are made as small as absolutely possible. If the paragraphs that
aren't touched by the proposal are kept outside of those boxes, it is
much easier to spot the actual changes made, than it is if you include
the entire original and new section side-by-side (as is the case with
2012-03's draft document).

Taking it one step further, it would be even better if those paragraphs
that have only change by a small amount (i.e., aren't completely
rewritten) have the actual changes highlighted, e.g., using
strikethrough for deleted text, and coloured text for added text (such
as the "Within the RIPE NCC service region" added by this proposal).

The changes indicated in sections 6.0 and 6.3 at
https://www.ripe.net/ripe/policies/proposals/2009-03/draft are two
examples I like.

Yes, that is far more helpful than other proposals I have taken the time to read, and makes it far easier to consider whether this is something I need to be concerned about or not, and to which extent.

Clear indications of changes is vital for the decision process.

In some document difference tracking views, there will be coloured differences, red for removed text, green for added, yellow for modified, and so on, plus markers such as arrows or plus/minus signs to indicate the differences for those who for some reason cannot discern the colours.

But we digress, my apologies for going forward with that.

In any case, I support this policy proposal.