Worth to see some more capabilities of this engine:
http://moonedit.com/tom/vox1_en.htm
(download cavedemo.zip and check readme)

I'm wondering if it could be possible to make more complex AoS like game, using, lets say, bigger player models like 6 blocks height. With explosives and terrain brush instead of single blocks.

gtfo LOL! This will, NEVER, most likely be in the game.

Some of it might, but others no.....

I didn't mean to implement "blaster" into AoS, but to make another game. I just like to show capabilities of engine. The thing I would like to see in AoS for eg. are round voxels to render bullets or maybe other things, or let user to choose between round and square shaped voxels for models, not for blocks ofc.

That demo just goes to show how nice VOXLAP can look if you work it hard enough. AoS would get like ten times as many players if it looked as good as the cave demo.