Um a Fighter with enough Int and Dex that takes one lvl of rogue can do just as well as your 14 rogue and hit higher end mobs to boot. Not to mention they have a broader range of weapons they can use and they can take more feats as bonus for weapon damage and to hit and leave there natural 4 to take rogue feats with.
Now that being said... The only real way to get rid of this one lvl of rogue **** is to take out the fact that you can put a full rank into a skill that was previously a class skill and is no longer. Cause yea my 13fighter/1rogue with a 18 int and a 24 Dex (not including enhancements, stat items, or tomes). That also gives me enough skill points to keep up Open Lock, Disable Device, Search, and Spot. So now I have a better BAB and more feats with the same Disable, Search and Open. So why besides flavor and being true to my class should i be a full rogue again?