A few things about this idea. 1. It is much easier to detect large extra-solar planets than small, earth-like ones, which probably accounts for the preponderance of them in extra-solar surveys. I think its naive to conclude the solar system is so unusual. 2. The Trappist system isn't all that different from our own. Even detecting one similar system in our neighborhood suggests that they may be more common than the exo-solar planetary surveys so far have revealed. 3. You seem to be implying the existence of some supernatural force which has arranged our solar system. Or perhaps just a very powerful force. But, given the scale of the universe (or even just the galaxy) and the utter lack of direct evidence for either supernatural forces or ultra-advanced aliens, it seems like, on balance, the explanation "we just got lucky, planetary resonances, etc" combined with "the major edifices of human knowledge are consistent with this explanation" seem sufficient to make the hypothesis of "big dudes built the solar system" seem absurd.