No they are not boring - lol. I think (I hope I got this right?) the OP wasn't saying they were bad and boring, but quite the opposite :)
I find the Leves to be boring if you apply the same things to them everytime. By this I mean the same class, higher and higher rank each time you do the Leve every 48 hours, and 1 star!. Playing these Leves solo after a few days does get a little repetitive - however - If you factor in differnet people playing, different classes, different number of stars it can get interesting. Honestly on 'Levenight', I spend hours and hours doing Leve's, some are repetitive some are not, but each time I play I find different things that makes the Leve interesting. The only problem is that if you are sharing them with a group of people/friends they can take your whole evening very easily!
I'm confident that SE will have enough Leves available to keep people happy and don't forget that the Leves gives rewards that are not only just gil, but gear, marks and faction points...these things link to better things such as Factionleves which are NM battles with better gear. This is a much better system for the casual player as over time, we can fight NM with decent drops without having to do 24 hour camps or be part of a massive end-game LS.