I have observed and been put off by the subtle difference in meter speed between the new 280y R9, which is a great driver, and the i15 clubs, the latter being also great, but with a meter speed that is slightly faster than the one of the driver in question, enough to cause all manner of maddening miss hits.
So here's my suggestion, that would be a great help : make the meter speed truly the exact same for the i15 clubs (and the 278y R9) as for the 280y R9, to create a welcome uniformity that doesn't wreck havoc with the timing of shots. I know the specs seem to indicate that all the meter speeds for those clubs are the same, BUT INDEED THEY ARE NOT. Please WGT, correct this subtle anomaly, again by making the meter speed truly the exact same for the i15 clubs (and the 278y R9) as for the 280y R9.