Well, I haven't seen any other posts like this, so I thought I'd post it here. The past few DKs, I've been paying attention to my exp totals for each level, seeing if there was some sort of rhyme or reason to how it increases from DK to DK. And...it turns out there's a very simple shifting.
The experience required for each level increases by the number of that level times the number of drive kills you've done. (-1, because you start at level 1)
Thus, the level 2 experience required goes up by 25 each DK, the level 9 goes up 200 each DK, etc. There's a bit of variance in there, I'm not sure exactly how that's calculated, but it seems to vary a bit within there, especially higher up.
However, for quick calculations, I've made up a small chart. Due to the shiftiness of occasional changes, at the higher levels it's a bit less accurate, but you should be able to figure things out close enough. If anyone wants to reply to this with the actual level one totals, or distract me or something, I'll update this.
Level 2: 100+25/DK
Level 3: 400+50/DK
Level 4: 1000+75/DK
Level 5: 1900+100/DK
Level 6: 3100+125/DK
Level 7: 4700+150/DK
Level 8: 6600+175/DK
Level 9: 9000+200/DK
Level 10: 12000+225/DK
Level 11: 15000+250/DK
Level 12: 19000+275/DK
Level 13: 24000+300/DK
Level 14: 29000+325/DK
Level 15: 36000+350/DK
The experience required for each level increases by the number of that level times the number of drive kills you've done. (-1, because you start at level 1)
Thus, the level 2 experience required goes up by 25 each DK, the level 9 goes up 200 each DK, etc. There's a bit of variance in there, I'm not sure exactly how that's calculated, but it seems to vary a bit within there, especially higher up.
However, for quick calculations, I've made up a small chart. Due to the shiftiness of occasional changes, at the higher levels it's a bit less accurate, but you should be able to figure things out close enough. If anyone wants to reply to this with the actual level one totals, or distract me or something, I'll update this.
Level 2: 100+25/DK
Level 3: 400+50/DK
Level 4: 1000+75/DK
Level 5: 1900+100/DK
Level 6: 3100+125/DK
Level 7: 4700+150/DK
Level 8: 6600+175/DK
Level 9: 9000+200/DK
Level 10: 12000+225/DK
Level 11: 15000+250/DK
Level 12: 19000+275/DK
Level 13: 24000+300/DK
Level 14: 29000+325/DK
Level 15: 36000+350/DK