Thanks to all for the responses.
Itīs not that I think that I need in any way an advisor, broker or the like to manage my already existing bogleheads-like portfolio. Itīs just that DFA funds, some of which seemly outperform "traditional" index funds trough some "non actively managed optimizations", are only sold to individuals through advisors, brokers or however you want to call them. I wondered (and still do) whether the additional fees may be offset by the (alleged and expected, that's the problem) outperformance.
Thanks for the link, dude, it's being truly helpful.