Well, that would need to be compensated somehow, because that would mean the DB will grow potentially much quicker, and then would create a bigger cost problem for node operators in general.
But, I don't think other DEXs have a problem with 1000 BEE, it is peanuts for most people operating DEXs or having bridges, etc. I also see the 1000 BEE as a "way to protect" against idiocracy and attacks, without any cost, attackers would just abuse the system and try to exploit ways to bring it down. There are always many sides to consider. 😇😉