Lower denoms (10, 100) have less chance per denom to win a stake, so they can get really old and then take a very long time to spend. This can cause higher orphaned stake rate.

If you go for higher denoms (1,000, 10,000), they have higher chance per denom to win a stake, so they will be reminted more regularly, reducing/removing the need for reminting.

1k may benefit from a remint every 1-2 weeeks. 10k probably does not need to be reminted at all, maybe just remint the oldest one(s) every few weeks at most.