We don't plan to address it because we do not share your doomsday opinion.

Like it or not, the current mint rate is what has been voted for.  Also, we do not believe a steep decline in the block reward (if that happens) would necessarily be bad.  A low block reward could detract some miners, but an exhausted supply could also put upward pressure on the price, which would serve to attract miners.  No one can predict the future.  There are some very successful altcoins, most notably Quark, that have undergone sharp drops in mining reward.  Our view is that this factor alone does not determine the future of a coin.  However, miners are free to adjust their votes according to their beliefs.

Wrt. temporal retargeting we conducted large-scale tests and found that it works very well.  We had a look at the timewarp exploit and fix.  As far as we know time-warp does not impact Heavycoin.  We use completely different code in this section.  This does not mean that there could not be an exploit one day, but if there were, it's not the end of the world because software can be updated and further improved.