i feel you are mistaking two different thing.... easier and bland... why people don't really like the new summoner, is because it's bland and boring... and what you said about mobility is not really the point, any jobs is easy passed a certain time to play... i'm sure a lot of people can do them cycle without even think, it don't means the jobs is not more "demanding".
what we are talking about more complexe jobs is stuff like, by example:
let's take the samurai, you have 2 buff (speed and damage), 1 dot, the kenki, the sen, meikyo, seinen/guren and finally now we have namikiri, while making sure to stay alligned with the party buff and over this we have to do positional (what was ease up) naturally you work all of this over your cycle that is about 2 minutes windows. (namikiri cd)
let's take the summoner in comparaison, you have the aether charge, bahamut/phoenix, carbuncle damage buff and your 3 jewel, naturally we can say too that you have a few cast time. i don't say that the jobs is too easy or such more that nothing make it really amazing exept the flashbang of titan. you can even compare if you want the number of button needed for play summoner compared to the samurai and check if everything is used often or not.
samurai didn't get partybuff, it's goal is to bring dps, but in counterpart it have a lot to take account. to follows, to respect for bring the most damage. and i don't take account of the combo and such. is not the point.
a jobs that is more demanding needed to be rewarded if well played... or people will not play it. it's fun to work your ass to be better if in the end someone else come and do better with less work. is not a question to balance the game around this, is about fairness. samurai is complexe because he don't bring buff, it ask to use a lot of skill for bring the best of his dps, even the simple change of order of some skill can have a huge impact on it dps.
and when i see my jobs is overshadowed by other jobs that have partybuff that are less demanding, i wonder why i play my jobs?
the question about balancing dps around jobs more demanding is not even the point. because the fact that they was demanding from the get go was intended we don't come saying other jobs must be weaker by a lot, simply that samurai (in this case) don't get screwed. i understand that they want people to play reaper and monk because they have change it (even if i found the change of monk ankward on some point) but the whole mess that is the balance was never as bad as this... we have a tank that can solo boss... we have dps that bring party buff that deal far more damage than the selfish dps... we even have jobs that are in deep need of change for become better.
finally, and that the most important point, not every jobs must be of the same difficulty. you can have jobs that is easy to play but hard to master and jobs that is hard to play from the get go.. but in all case, if someone play is jobs really well he must be rewarded... and the balance of the jobs must be respected. or some jobs will simply loose them place in the game. like in past... selfish dps have is role like party buffer have it's role... it's don't means either is more important than another... as samurai i'm overjoyed to be with good dancer, ninja, dragoon and such... because i know that i can do better with them help. and doing better myself will help the group. that all...