I will agree with SF. Front raises are redundant and really not that effective in my view.You may get a great pump, but so what? A pump is never a assurance of muscle gains. As an extension exercise (out and away from the front of the body) some will complain of lower back problems when working into heavier weight with front raises. If this occurs and you still want to do them, than try doing the front raises on a higher angled Incline bench. Using DB's over BB's give a better ROM with inclines. Using more of a hammer grip with the DB's (either standing or on an incline) may also relieve undo shoulder stress. Proper gripping (varies with each of us) can have quite a bit of influence on joint strain. As with most other exercises.
Might try BB military presses with a close grip (keeping the elbows in) for anterior mass. Also try BB front presses with a curl grip. Only go as high as the shoulders themselves. A very strong leverage exercise, which for the most part reduces the role of the triceps and more on anterior delt power.. Another one of those forgotten exercises, but never the less a good one.
Actually I find adding mass to the total delt/shoulder area not that difficult. Heavy presses like push/jerk presses and PBN's work well. As do up-right rows, Hi-Pulls and cleans. One arm DB side presses are excellent for shoulder power and pure muscle mass. Good Luck.