The LPL is really not that great so long as you actually use the typical 2/3 (if you look at the various tables, the average skill level is actually veteran, not regular) clan pilots indicated by canon. Yes it does well against fast movers if they have to get in range (this is a huge perk for the ERLL, shooting on 12's is perfectly fine if the enemy is out of range), but this comes at the cost of damage efficiency which makes it generally ineffective against heavily armored assaults where your numbers are generally low enough that the accuracy of the LPL is unimportant.
To be honest, I see partial wings as a niche for light/low-end medium mechs, mostly due to them gaining the greatest benefit from them. They're just not really worth sticking on an assault, especially since the space that they take up could be used putting in more heat sinks and weapons, which is really what an assault should be. Trying to make a fast-moving assault means you end up sacrificing too much weight to that, and so you end up with an under-armoured or under-armed (Charger anyone?) mech.
Hah, no. An 85 ton, 4/6/7 assault is absolutely terrifying in rough terrain. It can run down mediums, generate TMMs normally associated with lights, max its armor, and still carry the warload of a heavy.
Really the only other place you want to use the PW is 55 ton mediums because the only reason to go smaller than that is to exceed 6/9/X ground speed, and a PW design is going to be built around its jump mobility so you may as well go for iJJs on a 55 ton design because it will give you more free weight to play with. Even there you really only want to go for either 5/8/7 or 5/8/10 because going faster does not get you a better defensive mod and eviscerates your arsenal, and if you really want 7 jump mp with no ground speed you are better off going all the way up to 85 tons for the extra armor and firepower of a 4/6/7 assault.
That leaves you with exactly two optimal configurations. The 55 ton, 5/8/10 design and the 85 ton, 4/6/7 design.
