I personally don't think the FD and L3 are as identical as people claim them to be.
Yes they're shaped similarly and yes their flight numbers are very similar, but they throw differently.
Keep in mind my L3's are flat champs and lusters. The star L3's I've felt have had some dome, might have been a single run and newer ones are flatter? The ones I bag I'll throw FH with a shallow hyzer and they pop to flat and lock in on a laser beam. Seems to fly with more speed than glide.
Bagged a couple different types of FD's my favorites were the flatter sixth run c lines or g lines...for different reasons. G line had dome, I liked it for forced anny BH turnovers...put it up high and watch it hold the turnover line and glide forever. Sixth run c line was similar to how I use my L3's now, but carried a bit longer than the L3 and I felt was a bit more sensitive on how it wanted to be thrown. Hit it correctly and it'd almost carry too far...pretty much into distance range of my control setup or throw it too soft and it'd fade out more than the L3.
Not a bad disc, but for me the L3 TL3 combo works better. Ultimately I gave up on the FD because I didn't want to fuss with finding flat ones...same as the EL/exodus...