Well, can't see why a percentage would be bad.
Centralization is an issue. How do we counteract?
dude, if you think the thrashing to NXT reputation has been bad so far, just wait till howling about how "the 73 big fat rich NXT stakeholders have decided to mandatory charge a percentage based transaction fee".
And will you still think its a good idea the next time YOU want to transfer 10000 NXT and are hit with a 100 NXT transfer fee instead of our soon to be base fee of .1 NXT? Especially when that 100 NXT ends up going to a 'big fat rich stakeholder'? If you do this, prepare for NXT adoption rates to plummet.
1% transaction fee? You are kidding.
0.05% would be acceptable I think.
Why do you think a percentage is not a good idea?
I think it this way: percentages will lead to higher fees in total, which will lead to higher distribution of NXTs.