Thomas you can take a look on BP compensation model I did in Google sheet:
https://docs.google.com/spreadsheets/d/1oS7zUpzOgeK_id3q3fz73JpSGZZB82m0JAsi9P2Qes4/edit?ts=5b6066d8#gid=0

The model above follows simple known formula for BP compensation and doesn't take into account "leftover tail" redistribution to paid BPs.
By my estimate if we lower threshold to 0.25% (50 EOS/day) - that will add roughly 20 more paid BPs and cut that leftover tail by about 1500 EOS daily.
Depending on how this tail is redistributed to paid BPs - it would translate to a modest decrease to payout to paid BPs by average 20 EOS/day.

Again I welcome others to double-check my assumptions and math and adjust my estimates.