Xtrackers MSCI World Financials ETF

Hello dear Gequin Community,

I am currently working on restructuring my portfolio. Historically, I currently have a few funds and a number of individual shares.

I would like to switch the funds to ETFs and continue to save in them.

Classically, I would now select the following ETFs:

$VWCE (-0,3%) / $VHYL (-0,21%) and $VFEG (-0,55%)

Now my little thought experiment: Why should I limit myself to three ETFS when I could spread the whole thing much more widely? I have also thought about something like this (with smaller sums, of course):

$WELS (+0,14%)

$ECOG (-0,8%)

$EXH5 (+0,02%)

$CHIP (-1,21%)

$DFEN (-0,93%)

$XDWF (+0,04%)

$RBOT (-1,58%)

$XAIX (-0,73%)

$IH2O (-0,56%)

$WELW (+0,72%)

Of course I have a few duplications here, but I am much more differentiated.

Does this approach make sense in your eyes or is it a modest idea?