In accordance to my previous post regarding dead levels, and the WotC link, I updated it once more. But yeah, this is definitely powerful. But you gotta wonder how bad an idea it would be to mix classes that have the same BAB, HD, and Saves. Just what would you be gaining? Nothing really.
Link to core class dead level upgrades:
http://www.wizards.com/default.asp?x=dnd/cwc/20061013aFtr/Rog
HD: d10
Saves: Good Fort, Good Ref, Poor Will
LV Base Att Bonus Class Features
1. +1 Bonus Feat, Sneak Attack +1d6, Trapfinding
2. +2 Bonus Feat, Evasion
3. +3 Sneak Attack, Physical Prowess, +2d6, Trap Sense +1
4. +4 Bonus Feat, Uncanny Dodge
5. +5 Physical Prowess, Sneak Attack +3d6
6. +6/+1 Bonus Feat, Trap Sense +2
7. +7/+2 Physical Prowess, Sneak Attack +4d6
8. +8/+3 Bonus Feat, Improved Uncanny Dodge
9. +9/+4 Physical Prowess, Sneak Attack +5d6, Trap Sense +3
10. +10/+5 Bonus Feat, Special Ability
11. +11/+6/+1 Physical Prowess, Sneak Attack +6d6
12. +12/+7/+2 Bonus Feat, Trap Sense +4
13. +13/+8/+3 Physical Prowess, Sneak Attack +7d6, Special Ability
14. +14/+9/+4 Bonus Feat, Makeshift Tools
15. +15/+10/5 Physical Prowess, Sneak Attack +8d6, Trap Sense +5
16. +16/+11/+6/+1 Bonus Feat, Special Ability
17. +17/+12/+7/+2 Physical Prowess, Sneak Attack +9d6
18. +18/+13/+8/+3 Bonus Feat, Trap Sense +6
19. +19/+14/+9/+4 Physical Prowess, Sneak Attack +10d6, Special Ability
20. +20/+15/+10/+5 Bonus Feat, Skilled Saboteur
Class Skills (8+Int per level, x4 at first level): Rogue's list + Handle Animal and Ride.
Proficiencies: All simple and martial weapons, and all armors and shields (including tower shields).