Another interesting Latvia prospect is
Rihards Bukarts. Leading scorer of Latvia (as underager) on U17 Youth olympic tournament 2011 (2+2 in 3 games). His excellent goal against Slovakia -
video.
IIHF WC division I and division II countries:
Nathan Walker Australia - there were rumours about czech nationality for him to allow represent Czech republic, but nowadays he is playing WC Division IIA in Australia jersey.
Roberto Gliga Romania - sure not NHL prospect, but could be very influential player for Romania national team and maybe player for any european top league
Some Croatia guys playing abroad (Slovakia, Finland, Austria) leading by star GK
Mate Kresimir Tomljenovic, then F Petar Trstenjak (1992), F Dominik Kanaet (1991), Borna Rendulic (1992), D Borna Silovic (1993), D Luka Markovic (1993), F Luka Vukoja (1995) and for example F Mislav Rosandic (1995) gained 45 points in 44 games during this season Slovakia U18 league. There is not real NHL-prospect, but some players could reach higher level than EBEL-league in jersey of Medvescak Zagreb.
Other european rising countries are Hungary and Spain (Spain play first time ever division I this year).