The item system is lacking in so many ways.
-First, if you want an item limit, make it reasonable, i got to lvl 4 before it filled completely.
-Second, equipped gear shouldn't show in the inventory annd you should be able to sort shop items in some way or another.
-Third, if one cannot use filters to sort their inventory effectively, let us move the items around and sort it ourselves.
Thank you for noticing and/or considering it.