iShares STOXX Europe 600 Insurance 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 (+0,1%) / $VHYL (+0,17%) and $VFEG (-0,33%)

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 (+0,21%)

$ECOG (+0,03%)

$EXH5 (+0,07%)

$CHIP (-0,65%)

$DFEN (+0,51%)

$XDWF (+0,03%)

$RBOT (-0,31%)

$XAIX (-0,24%)

$IH2O (+0,03%)

$WELW (+0,05%)

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?