Remaking games would likely be an expensive and slow disaster...
That being said I've no idea why snk does not do a sega and self publish their back catalogue in as attractive bundles as possible. Efforts such as the neostation seemed great, but it was an extremely limited affair. Now there's systems easily powerful enough to emulate well (with similar architectures) this would not require the relatively lengthy porting efforts previously seen.
The relatively good mobile game adaptations are interesting but I don't think they're going to generate enough interest to result in faithful remakes or new arcade (style) games in the series.