W and other frames vs. driver's Qts

[hakunin]

Hello guys,
I would like to ask about driver's Q and W and similar baffles.

1) So far i (hope) i understand that W baffles would lower the fs - so will it elevate the Q as well? (I'd think yes)

2) Also I am concerned about the usable Q range for two 15" woofers in W or N/V frames.

3) I would guess that V loads the cone less than W, is it true?

4) Is highish Q driver like 0.7 high usable in W frame for frequencies below 80Hz?

And I would be very glad if someone with experience with both U frames and W frames could shed some insight on subjective side too.

Thank you very much!