Old gal here. I switched about 10 years ago at the suggestion/insistence of one of my coaches. Never looked back.
Tips etc you ask for:
-Foot position is different. You ride with the pedal axle more mid foot. You use pressure to keep your feet on the pedals, and "heels down" for additional pressure in tech or dh.
-Pedal choice. I wore out two sets of catalyst and then went back to a smaller pedal, so I feel pretty secure in commenting on them. The larger platform is really nice to prevent foot fatigue, but imnsho I think it's harder to pressure the pedal. I really noticed this once I got coaching certified and saw that folks on the catalysts had a much more difficult time using foot pressure. If you have big feet, I don't think this is as much as an issue as someone who has small feet like I do. The foot pressure was just too spread out over the surface of the pedal. I've been working on drops, lifts and jumps and you really need to use pressure. I've been working on drops, lifts and jumps and you really need to use pressure. I am currently running Raceface Attack but I've also used Diety.
Don't let the haters get you down. I've seen that with the new geometry (one old far to another that has seen a lot of bike changes over the last **cough** years) you can really maximize bike performance and how you use your body with flats to become a more dynamic rider.