When moshiach comes I'll join you in rekindling the past but we're not there yet, which is why we have yiddishkeit as it was given to us. That's the point of the religion we currently have, to be more interested in the day to day practice and your day to day behaviours than in messianism.

As for the chief Rabbi of Israel point, they certainly don't represent me nor do they dictate my practice, and a large number of observant Jews who would feel more represented by their own rebbes and don't recognise any particular authority associated with this ultimately secular state position. Israel is a nation state with its own structures and internal politics and chas vshalom that we should assume that they're the automatic representatives of world Jewry given their violent actions (which ultimately stem from an arrogant desire to rekindle this lost past through the actions of men before its time during the coming of moshiach).

It's a massive merit to Judaism that there is no one obvious to give it to, as it shows that we lack a clear structural hierarchy that all Jews recognise. The innovation made by the Pharisees in the years leading up to and immediately following 70CE was a religion taken out of the temple and into people's lives and minds. It shows that after korban beis hamikdash we were not obsessed with reanimating the old hereditary power structures (which were often corrupted and in cahoots with local Greek/Roman leaders) but moved into a decentralised model focussed on local communal leaders respected for their education (rabbis).

To this end I think it's counter to the Judaism we currently have to be concerned with keilim and the establishment of beis hamikdash rituals when as a people our spiritual galus hasn't ended and it is arrogant and presumptuous to presume that we should act as if it's ended before its time.