I am not sure if it's just me, or a bug, but the level cap I've reached is 132. All my skill trees are full and any further experience earned contributes to a negative total. I wholeheartedly agree that the cap should be when the max gear level is acquired at level 80. The enemies continue to level with their ever increasing health/shield pool to what I believe to be the level cap of 132 while your base weapon damage and armor bonuses stalls at 80. Power Damage, health, and shields seems to continue to increase as you add skill points to the respective tree but the additive bonuses are miniscule at best. Your teammate, however, stops leveling at level 70 but they continue to pool excess skill points.
Level 132 insanity mode is insane. It requires specialization into a specific build through the use of augments, acquiring the AVP Innovation (max augment slots) as early as possible (level 4 AVP I believe), choice of weapons and armor sets. Your teammates perish often, tech constructs becomes nearly useless unless you specialize into it, you use cover more frequently, focus fire is more necessary, and profile switching becomes inadequate unless switching within your tree specialization (you lose a lot of bonuses if you specialize into engineer and profile switch into let's say, adept). If profile switching also save your specialized weapons and armor within the profile and the skill cooldown penalty is minimized from profile switching then switching profiles will become more viable and fun.
It's a little gratifying completing insanity mode on max level. The result of your choices of weapons, armor, augments, and skill becomes more pronounced in various enemy engagements. When to rush an enemy with a high threat value and when to fall back to a new engagement point to thin out the herd is crucial. To sum up my experience in level 132 insanity - failure become disappointingly educational and success becomes "holy Tann, Addison, that was a fun fight!". (apparently using a fictional swear word from Battlestar Galactica deletes your post. My apologies if this becomes double posted).