W-M has quasi-poo-pooed the HeroScape line for the time being. They sold Wave 9 packs, but not the terrain stuff. With Wizards taking control of the distribution and development, FLGS's are picking up the slack. Fortunately, I think the Wave 9 boosters sold reasonably well, so W-M may continue to sell unit packs.
Marvel Heroscape isn't great. For the money, there isn't enough terrain. The figs are interesting, but it isn't clear if the first expansion of figs will ever hit the shelves. Granted, with HeroClix minis and Heroscapers.net, you can make any hero or villain you want, as there are tons of homegrown stat cards available.