This kinda reminds me when Wenger was still in charge of Arsenal. Back then alot of fans were pretty unsatisfied on how Wenger always ended up getting 4th spot and now Im sure that fans will be happy with Wenger's achievement so far compared with Arteta.

Regarding upgrades in most of the positions, probably its not going to happen anytime soon because the transfer window is closing but this is by far the worst Arsenal's performance and Arteta would be taking all the blame for it. I dont think that there isnt that many top coach that want to take over Arsenal but Frank Lampard could be one of the candidate to replace arteta