Giltonio_Santos
Hero
sure, you have a best case scenario (18 dex) and put all the points into 2 skills. So they are terrible at everything else. There are locks and traps, and noises and walls, for that matter, in low level adventures.
Yes, they could then get, say, detect noise and open locks to that range around level 5, and two others by level 9...at which point they would be a "high" level character, and pretty good (not great) at 6 of 8 thief skills.
And that's why I said focus was key. At level 1, it's two skills with solid chance of success, one with reasonable chance (climb walls), one where you cannot even try until you're level 4 (read languages) and four others where you'll roll with whatever you manage to find (pick pockets 35% is not negligible, for instance). A level 1 fighter has the same THAC0 as a mage, unless we're talking about the weapon he specializes in. That mage can cast one spell, unless he chooses to specialize and forever neglect two schools of magic.
You can say 2E characters were not powerhouses, but the thieving skills are on par with other class features of their time, and if you planned well, they were great to use in game.