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 (-0,04%) / $VHYL (+0,15%) and $VFEG (+0,11%)

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 (+0,5%)

$ECOG (+0,01%)

$EXH5 (-0,59%)

$CHIP (+0,33%)

$DFEN (-0,36%)

$XDWF (+0,05%)

$RBOT (+0,09%)

$XAIX (+0%)

$IH2O (+0,01%)

$WELW (+0,64%)

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?