each main scenario quest need a higher level, i finished all quest and still can't reach next level. I can only do fate grinding which is very boring.

After 46 main quest, the next one is 49! unbelievable, I had to grind fate for hours ,still sitting at 48 now.

This late game content is very lacking. Will you consider adding more quest?

IMHO, there should be more than enough quest to level you to lvl 50. Shouldn't even be looking for quest all over the world, let alone doing fate over and over again.