Pros:

Cons:

HIP 29v2?

Rather than reducing the slots for each shard, HIP 29v2 proposes to shut down all internal validators of non-shard 0. Since each shard has 5 validator nodes with 5 keys per node, in total each shard has 25 slots. Shutting down the validator nodes of shards 1, 2, and 3 will reduce the internal slots of Harmony from 100 to 25 (49% → 12%).

Internal External
Current 49% (100) 51% (900)
HIP 29v1 26% (48) 74% (952)
HIP 29v2 12% (25) 88% (975)
Internal External
Current 49% (100) 51% (900)
1st Stage 26% (48) 74% (952)
2nd Stage 0% (0) 100% (1000)

Blocker

Concerns