If these two can develop into top 4 D pair and QB and Clarke close in to their potential, the Kings' future post Kopi+Drew doesn't look that bad at all.
Kempe, QB, Fiala, Moore, Clarke, Anderson, Laf, Turcotte, Wooley, Brz, Greentree, Helenius, Mallott, Lee, along with 2 gems (maybe even 3) in goal.
Resign Foegele and Armia and you're potentially 1 top 6 (or top 9, if Turcotte spurts) center away form fielding a competitive and very cost controlled team after Drew retires.
The only really ugly spot post-Drew are Ceci and Edmundson. Maybe the Kings strike lucky with Salin and he replaces him on the 3rd pair in 2 years time as the more offensive minded D-man on the 3rd pair to go with Dumoulin...
This is assuming Kempe resigns, of course. If he doesn't, well, if he's traded for a top package (preferably for a very talented C prospect) then OK, if he walks for nothing? Well then we're screwed...