1) A review into whether Overridable Armour from Smuggler expertise should continue to diminish all irregular armour by half, e.g. Base of Operations, Base Powder, Ent Buff, IG-88 Head, Carbonite Cakes etc.
I would say the extent to which irregular armour is currently impacted is, well, a bit too broad.
2) Consider a possible rethink to Rogue and Scoundrel's set bonuses for the following reasons:
Rogue - there's always the option not to take SAS, but no option not to use Rogue in a PvP setting. If you are going to make full use of 7 piece Rogue and not take SAS, you are limiting what you get out of the set. At the same time, taking the line means you are usually looking at a 3-5 point expertise investment, even if you want to spend the points elsewhere.
Scoundrel's - again, a nice bonus to BTD, but BTD is locked behind 4 points of Hammer Fanning and requires full investment in the pistol line. I'm not sure that unlinking BTD makes sense, but strongly encouraging point investment is limiting.
Even if you debate other profession sets that grant bonuses to specific abilities, most seem to require only a single point investment (many abilities being unlinked) or no investment at all. In many of those cases, the single point investment and any additional improvements are usually what we would consider mandatory anyway e.g. Smoke & Mirrors, SFP, Lightning, Maelstrom etc. What I mean by this is that there's isn't actually much of a choice, which is not the case for Smuggler.
I've left Gambler's out because it's already a line specific set, Camouflage Ally requires no investment, OTC is virtually mandatory, and FH can be picked up for 1 point (unlinked).
TL;DR: there is less flexibility RE expertise - due to the 7 piece bonuses for Scoundrel's + Rogue, not more.
*Note, I haven't reviewed Vanguard at all, so, err, sorry.