Yet another thing I've yet to touch upon in any real way is how the [HEROIC] Missions have changed with 4.0. As everyone knows, every Heroic Mission outside of a few select cases (namely those for Gree, Rakghoul, Section X, and the Macrobinocular and Seeker Droid quests) are now [HEROIC 2+] missions and thus can easily be soloed.
Heck, of the specific instances where there still
are [HEROIC 4] Missions, only
one is impossible to solo, this of course being the final Shroud Mission.
They're also very accessible, with new terminals on each Fleet as well as on Odessen providing easy access to every single 'standard' [HEROIC 2+] Mission; the only ones not present here are any Area Heroics and the CZ-5X Droid on CZ-198.
Because of this, Heroics swiftly became
the thing to do; the access was easy, the payout was good, and there was the additional reward of the Alliance Supply Crates.
Of course, this also means that for many people they have replaced the
previous credit-grind system of the Dailies. Comparisons between the two have been done several times before, of course, but I'd like to just wade in and add my own views to the pile-up.
This will also be solely from an endgame perspective. Heroics are of course an invaluable source of XP Gain for levelling nowadays - so much so that they are the most widely-advised supplements to planetary and class quests - and Dailies don't emerge until Level 50 with The Black Hole and Section X.