Since 10.4 we have object browser filter, though it's better than nothing, it still does not help much with navigation due to “like '%xxx%'” behaviour.
Any chance to have ability to permanently hide certain tables from view? May be in right click menu -> move them to separate folder (Tables [hidden]).
I manage bases with over 1200 tables, and majority of them are out of my interest, so navigation is pain. Filter, as is, does not help much, as for `user`, for example, there are 148 variants in my case and filter works as “like '%user%'”, not even “like 'user%'”. I would prefer it to work as “REGEXP 'user'”, so I could input '^user' to find my table.