I don't want to dumbly ask as a newbie, but since I will play An ULTRADEEP mtt, whose buyin is 100 € (5 times my ABI on Pokerstars.it), I'd like to read about your experienced opinion on superdeep mtts.

1) What would your attitude be in Early Stage?

2) Middle stage?

3) Late Stage?

4) What would a rational preflop open, calling and 3betting range be during the superdeep phase?

Consider the tournament will have a 30000 starting stack, levels of 30 minutes, and MANY MANY levels (Ante starts at 4th level, 50/100/10).

Thank you for your patience. I just searched for more material about deep mtts, but I haven't found anything recent.

If you're playing against Italians just try to see a lot of cheap flops and look for the nuts

Kinda lachonic, isn't it? LOL Jokes apart, ok, small ball. Anything more detailed? Thanks anyway!

big pairs are not that valueable early because people so deep you dont want to play big pots with one pair hand

look to play sooted 1 & 2 gappers and pps in position

Thanks man!

Yes in reality, usually not much happens to your stack when very deep, because winning 30BB, which is pretty big already, is like only 15% of the whole stack.
The nice thing though is that you may get an opportunity to double up with a nutted hand, because a lot of players don't realise how big their stack actually is in terms of BBs and are prone to getting a stack in with a subpar holding for the situation (for example a non-ace flush on a paired board or smthg).
I like smallball in those tournaments all way from the beginning to end.
As said, during the first levels, hope for an opportunity to maximise value. Don't chase with horrible holdings, but set-mine, Ax suited or so are decent shots. Don't try to 3-bet, raise big or whatever preflop with subpar holdings, because chances are that people will look you up preflop a lot. Better get comfortable with multiway pots!...

Once the blinds are catching up, just play your best game and adapt to your crowd. The level of play is probably equivalent to what you'll find in a 10€ tournament online. Some decent regs, but a lot of bad ones.

Very precise, thanks man!

Good webinar from J Little and M Affleck last week on this topic. Definitely play suited and connected cards that can make big hands. Play big pairs carefully.

yep
Play a wide range of opening hands and small ball anything that isn't the nuts.
If there is substantial action before you pre and you have AA just shove (lol)

Could you please link anything of it? Thank you!

LOL, but jokes apart, I'd really shove AA after a 4 or 5bet, even if 500x. What do you think about it? Thanks anyway for the answer.

you'd need to give specific hands, opponents, betting etc. there's no one easy answer.

Got it.

Great advice. So playing the suited connects -- are you open raising them like you would big pairs in shallower stacks or are you playing a lot of limp/call pots, knowing that the PFRs are probably big cards?

Deep stacked in such a live tournament, if there are limpers already in the pot, I would limp in, because a normal-sized raise will just bloat the pot with no reason, but not get rid of enough players.
If I'm the first one to enter the pot, I will never limp. No reason to do so, you want your oppononets to keep guessing about your range.
NB: To be honest, this kind of limp/call behaviour at the beginning of small live tournaments tends to disappear. At least, that's what I'm experiencing locally anyway. The general idea is the same though, see a cheap flop if SPR is really high with speculative hands that do well multi-way. Don't get overly excited with non-nutted hands, but do try to maximise value (fine line I know, but that's why skill beats luck right?...).

I do limp much later in tournaments in BvB situations and 15-25BB effective stacks. But that's another strategy discussion entirely. But just saying, those are the only situations where I would limp first.

I usually (but not often) limp in just a few cases: BvB as well, and short-stacked BU vs Blinds situations, trying to balance my limping ranges with hands with flop equity and monsters