Some minor suggestions

[NoobUser]

Instead of having separate point buy totals of 15 20 and 25, combined all three and have user input max point buy. Sometimes non standard point buy are used and we have to use website to do the calculation.

have option of HP be inputted like Pathfinder Society or have average rolls (such as 5.5 for d10, 4.5 for d8 etc. Just to save on a bunch of clicking especially when you're designing specific encounters.

Have another option for character advancement that doesn't use XP. Some games don't keep track XP and level up when story mark occurs.