I would really like to be able to see the spells without the concentration, and not only see which concentration spells I have.

With this kind of filter it would be easier to not accidentally cast a concentration spell that cancels the first one.

You can alsways do this. And concentration spells are labeled as such on the character sheet, so you shouldn't be accidentally casting any.

Yeah i know i can see,  but sometimes battle is intense and it would be easier to be able to exklude concentration spells from the sheet rather than to only see the concentration spells 

You are not wrong (I guess, more options more better). That should be the second exclusion filter added to character sheet spell lists, after upcasted spells.

Yeah it would also be great :)