Speaking as a BLU, it doesn't bother me in the least.
In my time playing this game, the only time I can say I've used 10 or more different macros during any single activity would be while playing SCH, and that's usually while healing/buffing. Nuking is generally spamming Parsimony and maybe 4 other spells. Jobs, playstyles, and situations differ (obviously), but the point is this is this problem is a little overblown.
FFXIV isn't FFXI, odds are everything will be balanced so you only need so many spells at one time. Even if it isn't, which is likely, the macro system and whatever other things they add could make up for it. Each weapon might have its own action bar, thus saving the skills and macros attached to it.