After reading all the answers it looks like there is only 3 options:
-Logs
-Hplb
-others shorter boards of differents kind
To stay with the longboards idea i can see a whole world of shape between this two opposite.
I stayed in Morocco this winter for 6 weeks surfing a lot with a full longboard quiver, and i was very happy on every day.(perfect pointbbreak waves from 2 two 10 feet, malibu long without the crowd)
here's a pic of the quiver i took up there.
From left to right
9'8 log Nuuhiwa style step deck noserider for small and perfect days.
9'5 x 22 7/8 X 3 pinched rails, low in the tail.Bottom: blended nose concave to belly to V double concave.
A little more nose rocker.
i wanted to try different fin configurations but finally I like more the single fin.Can hold very well to 10 foot.
Very good in head high for those days where you have to be faster to make some closing sections.
( you don't want to loose the wave when it's more than 600m long)That was also a favorite board for a buddy who is 220lbs(i'm 140lbs)
9'2 x 22 1/2 X 3 50/50 half pinched rails but edge in the tail.Low rocker.A little more classic than the 9'5 but with a little more drive of the tail.
8'4 x 22 x 2 3/4 Kind of small longboard ,streched egg,60/40 rails, tucked under edge in the last third.
Very good in bigger surf.One of the reasons of surfing 9'0 hplb is because of the contests where you have to ride a 9'0 minimum.
Otherwise a little smaller can be very good.I like it also when you go to places with a lot of shortboarders staying in a small area(slabs for exemples) you can more easily late take off and you don't have to paddle to much from outside.
7'9 x22/1/4x 3 a kind of hullish egg.
6'2 twinzer (that was a come back for me to ride smaller boards)
And on the floor a 10'4 big fish simmons very good after 5 hours in the water for the days "it's perfect, you still want to surf but you're a bit tired".
Or for any average days you want some unique glide.
So as you can see differents longboards between heavy logs and "ugly" hplb.
i also shaped a 8'9 pig (with tucked under rails), a 9'2 down rails(no edge)
Both very good in bigger surf but not HP style.
As you can see in the picture the 9'2, witch is all about glide and curves, seemed to hold well in medium sized waves.
I was thinking also about a 9' big fish, a 9' bonzer .I also shaped a single fin hplb but didn't had the time to try it yet.
Well there's a lot of differents shapes to surf in faster or bigger waves.I don't like the feeling of the 1+2 or trifins hplb.
I don't like neither to log when you need a little more juice...
But if "you" like the feel of the hplb,go hp.
Hope to help you a little.
Franck