I did a small calculation on my last post which might answer your question.

Hive inflation is currently distributed as follows:
65% posting/curation rewards (32,5/32,5 equally split).
10% Witnesses
15% Hive Power APR
10% DHF
Substrating 10% from the first category would net as follows:
55% posting/curation rewards (27,5/27,5 equally split).
10% Witnesses
25% Hive Power APR
10% DHF
Which in practice would equal a -15.38% reduction in both curation and author rewards in exchange for increasing +40% of the rewards for holding plain HP (Please feel free to correct me If I'm missing something obvious).
-15% in voting power (with its consequences for authors and curation) in exchange for a net APR of +4,03% for holding Hive power (increased from the actual 3,09%).