No, mostly because I'm also aiming at improving my boat on two points where I don't fly a spinnaker.

Beam reaching my F16 is kinda sensitive in the fore-aft direction, I have to back off in a blow or make sure I'm really on top of thing. I do sail/race in light but gusty winds now and then and my boat significantly drops it bows everytime a gust comes along while I sit near the mainbeam for proper balance. A Blade does this significantly less. No spinnaker is hoisted on these course and so it can't be a factor

The third area of improvement is spinnaker sailing in steep chop. In flat water i don't have much issues at all keeping the spinnaker drawing and the boat at speed. In severe chop it is become really sensitiv, partly because of the relatively small rudders by AHPC and the fact that they can stall on the worst moment of all.

But I do think it is a little bit of everything. Both a newer spin and T-foils will help and combined the result will be better then just having only one.

Wouter