...but it seem to me more honest to say in advance what is our plan (which anyway, can be changed in the future).
Exactly! Al plans are subject to change so it is not a question of honesty.
Somehow, in my point of view, it may help to avoid some PI assignments if they are not *really* needed, or when regular assignments are possible (for example your own case, suggesting that because the type of infrastructure/organization, its better to go for becoming an LIR).
This is why the PI policy requires the sponsoring LIR to suggest alternate solutions to the applicant and the PI form asks the applicant if the LIR did discuss alternate solutions with them. I don't believe that an expiry date is an "honest" way to address this issue. If it is an issue then the policy should address it directly.
Regarding the /32 or /48, I think we had very long discussions on that. I just don't believe the /48 will be reachable from all the networks,
This automatically causes the policy to expire because if people notice that a policy doesn't work, they will get rid of it at some future time. On the other hand, we do not have the wisdom to see the future so we should not assume that reachability will be a problem. And if it is not a problem, then it is foolish for the policy to automatically expire.
Last, but not least, I also will prefer a "common" policy across the different regions, but I think we can't call it "global", because ICANN process, and in any case, it may be very difficult to coordinate that if not too late and impossible ...
The only way to achieve a common policy is to muddle through, make lots of mistakes, keep an eye on the other 4 RIRs and be willing to fix mistakes by changing policy WHEN WE HAVE THE INFORMATION to see what is really a mistake and what is not. We cannot legislate common policy in advance. And we will get to a common policy quicker if we accept that it is hard to write a 100% perfect policy but it is OK to have 50% of perfection the first time and then fix it later with a new proposal. --Michael Dillon