one thing you have to keep in mind, is that an intimitank is a fairly(imo) boring toon to play(hold down block, press 1 and stand there while everyone else does something), they also require alot more equipment than the average build. To be honest however, a 32pt STR based assassin vs a 28 pt dex assassin is not a whole world of difference. Your looking at +4-6 dmg at -1AB on a halfling compared to what you have now. The survivability will probably be slightly lower also.
That said, try out an intimy. personally i think they are not all too fun.
That or power through and just TR. If you have 1750 favor already, chances are you are fairly close if not at 20cap already.