TSF as a base would be a disaster. It is extremely difficult to achieve a 25 min turnaround. The preferred takeoff is opposite to landing and thus delays occur. Make it a base with more traffic = more delays. Is it CAT 2 yet? For a foggy base it needs to be. VRN 110km from BGY? LTN - STN is less than that. MAN - LPL is less than that. NRN - EIN - MST is less than that. GRN - BCN etc. etc.