Now that motes are dropping more often from public events and engrams decoding shouldn't there be a use for them? Xur doesn't offer the exotic engram he has every prior week, looks like the exotic shard took its place. The only use now is the cosmetic items that will end up just piling up and doing nothing. Maybe the exotic shard should take motes of light instead of strange coins. That way you are at least in part earning the upgrade through experience rather than purely based on the RNG. And it gives the motes a use that may lessen some of the complaints about the exotic upgrade path.