The Martial Rogue:
Alignment: any
HD: d6
Skills: same as Rogue, except sp/lvl is 4+int mod
BAB: as fighter
Saves: as Rogue
Proficiencies: as Rogue
1 Sneak attack +1d6, Weapon Finesse
2 Trap Finding
3 Sneak attack +2d6
4 Evasion
5 Sneak attack +3d6
6
7 Sneak attack +4d6
8
9 Sneak attack +5d6
10 Improved Sneak Attack (d8)
11 Sneak attack +6d8
12 Special Ability
13 Sneak attack +7d8
14 Improved Sneak Attack (d10)
15 Sneak attack +8d10
16 Special Ability
17 Sneak attack +9d10
18 Improved Sneak Attack (d12)
19 Sneak attack +10d12
20 Special Ability
My humble suggestions. Reduce Skills to 4+Int, keep same skill list. Delay Special abilities until level 12 and the martial rogue only gains 3 of them, once every 4 levels. Delay Evasion until 4th level. Increase sneak attack die by 1 at 10th level and every 4 levels afterwards.
At 10th level the martial rogue (needs a better name too) does 5 more points on an average sneak attack then a rogue. At 14th it is 14 more damage, and at 18th it is 27 more damage. At level 19+ it is 30 more damage, or on average 3 more points per sneak die. Its a high level only ability, rogues will have lower BAB, more special abilities, and of course, uncanny dodge (which negates a martial rogue beating a rogue unless it is 4 levels higher than the rogue). Naturally, the rogue will have many more skills maxed. I would revise the special ability list of the martial rogue a little, taking off Skill Mastery adding something like Hamstring perhaps.
Technik