1) well Scum was worth the 10£ alone and most classes did get really cool new abilities (still can't get myself to like the electronet tho:/)
2) the macro together with the achievement gives reason to go visit all those planets again ( the sets/speeder you can get are kinda cool but certainly a BIG grind)
actually i find makeb dailies horrible but the GSI (seeker/macro) ones really good, becasue you can group up and everyone get's the quest update no matter where on the planet you are, so you gather a team split up and are done in no time (and most or less of a pita than some of the seeker missions too)
3) just adding on the gearing that i really don't like how hard they made it to get your set bonuses and all the drama that can cause;/
4) makeb in general get's boring since it's the only zone for 50 to 55 and i really really hate that "convinient" quest flow design where everything falls together and you are done in one go (ye i know i'm strange like that:P) so nowadays i avoid lvling in makeb at all costs (luckily it's not really hard, section x for example gives tons of xp)