A hardfork to fix this pos diff manipulation will penalize microstakers you have been warned.
While this may be the case if done wrong, it would be mitigated by the CON code that has the smaller blocks compete together...
i.e.
1,000 TEK broken up into 1 TEK blocks would compete together and stake as a single 1,000 coin block and then spit out 2 blocks at 500+ 1/2 stake times two. This would remove quite a lot of small blocks.
This is just my opinion. I have 100k+ coins and will continue to for the foreseeable future so take my opinion as you see fit.