Just an FYI for folks on the differences

uBO Lite:

Filter lists update only when the extension updates (no fetching up to date lists from servers) Many filters are dropped at conversion time due to MV3's limited filter syntax No crafting your own filters (thus no element picker) No strict-blocked pages No per-site switches No dynamic filtering No importing external lists

It does seem to have some sort of element picker / own filters. I've been using that. Fair enough with the other stuff.