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 (-0,56 %) / $VHYL (-0,58 %) and $VFEG (+0,07 %)

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 (-0,35 %)

$ECOG (-0,58 %)

$EXH5 (-0,42 %)

$CHIP (-2,12 %)

$DFEN (+0,7 %)

$XDWF (-0,73 %)

$RBOT (-0,37 %)

$XAIX (-0,23 %)

$IH2O (+0,04 %)

$WELW (-1,4 %)

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?