Super fun season so far and I have great news for you. We have locked answers for 4 stating 5 positions (long term):
1 Jakucionis
3 Buzelis
4 Murauskas
5 Sabonis
Assuming Sabonis will play high level till 35yo. IMO, with his fitness and healthy lifestyle he'll be elite till that if not longer.
KJ without comments, I gave it in PG thread. There's no doubt he's future leader and key player.
Buzelis will be good. Very good. At worst he'll be superole player with multidimentional impact, and Wagner light at best.
Murauskas has it. He has killers instinct and feel for the most efficient ways to score. He will be a threat at 4 position with his in and out offensive presence and he can rebound.
Domas is Domas. All NBA guy and with KJ's ultra facilitation he'll be better in the NT.
So the only answer that I'm not 100% sure is SG. My main guy is Indrusaitis. He had very nice debut in NCAA and has tons of promise. Dropped 20ppg at U18 and all, but we still have to wait and see how he will look at PRO. He is not transecndent prospect as KJ, but surely very gifted. We have to see how his physicality will translate to PROs. He will add some muscle and might become a bit more rigid. We lost some very gifted SGs this way, like Varnas f.e. Nojus won't be that, but he might lose some of his skoothness duo to that. If that's not happening, he might even spend some years as deep bench guy in the NBA, IMO. He brings more handle, true 3 ways scoring and fundamentals compared to other SG candidates as Rubstavicius, Sirvydis, Lelavicius, Brazdeikis. But Ironically, there's a chance that Nojus main competitor will still be D. Giedraitis. He has a lot of fundamentals and surely more than those 4 lentghy swingmem I mention previously. So SG position is still most hard to answer, but I think Nojus has the best package. His scoring burst can be amazing, very nice combination of IQ, athleticism and skill for a typical size SG.
One interesting thing. I'm starting to believe Buika my challenge both Jokubaitis and Marciulionis at 1. He might become more explosive scorer at 1 and pretty close if not better at facilitation. He has more ISO game than both Jokubaitis and Marciulionis likely, but this thesis is a bit pre-mature. I'll have to see more. Nevertheless I see some signs that he might be more explosive and skilled player than Augis and Rokas. So the back-up PG competition will be all time high and it's nothing even close ever.
The way I see it long term, we have such depth pool:
Jakucionis, Buika, Jokubaitis, Marciulionis
Indrusaitis, D. Giedraitis, Sirvydis, Lelevicius
Buzelis, Rubstavicius, Zibuda, Brazdeikis, Juzenas
Murauskas, Sedekerskis, Tubelis
Sabonis, Krivas, Butajevas, Stombergas
Position 4 at first glance may look the thinnest, but I'm sure that Murauskas/Sedekerskis alone can fully cover it and when you can throw Buzelis and Tubelis, or even Butajevas there two it also makes super deep position. BTW, gut feeling is that Zibuda will play 4 one day if he will add few more centimeters. To me that makes terrific sense, but maybe he won't be that tall. I missed this one with Sirvydis when i was thinking that NBA will try to make a Kulboka out of him

But Sirvydis luckily never added wight on and remained a nice skilled swingman.
Overall we don't lack high level players in all positions and I'm almost 100% sure that we never had deeper talent pool ever. Most importantly we nhave star material in KJ, Buzelis, Sabonis and obvious starting level pieces as Murauskas. Only now injuries and god speed you.