What kind of liquidity do you mean? From the markets? Dunno tbh, considering how much of the total hive in existence is liquid I don't think that's of much concern. One thing one could argue is that current "burnposts" aren't burning the curation rewards of their upvoters, just the post rewards, so those growing in stake keep earning the same curation rewards while only part of that is burned. This one wouldn't remove hive from liquidity but instead challenge the curation reward pool.