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 (-0,02%) / $VHYL (+0,02%) and $VFEG (-0,31%)

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 (+0,04%)

$ECOG (-0,07%)

$EXH5 (+0,1%)

$CHIP (-0,84%)

$DFEN (+0,18%)

$XDWF (-0,1%)

$RBOT (-0,41%)

$XAIX (-0,31%)

$IH2O (+0%)

$WELW (-0,07%)

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?