This would have to be my favourite weight range for poppers (I spend far too much time fishing stick-baits, I'm out of shape!)
From a design point of view this is what interests me "good poppers that stay in the water well AND more importantly, because they are of a size and weight which the angler can actually pop properly" It makes sense to me to concentrate efforts in this area...
Here's a shot from earlier today... This is a 130g popper I have been working on since last year, I am getting there slowly but there is no rush. Working on ticking the boxes from Brandon's quote above, and hopefully I'll have a 'heavyweight' without feeling the burn for my next GT popping excursion!