Nintendo needs to remove regional restrictions on its hardware and software; actually release a home console that the mass market wants and publishers are willing to support till the end of its life cycle; expand its software line-up to provide more variety (either by having third-party support or branching out internally); redesign its account system so that accounts and licenses aren't as bound to a particular console as they are now; and perhaps build some goodwill among its core audience by releasing some oft-requested titles that might make a loss (like F-Zero or Metroid Prime).
Sony needs to redesign its store front so that it's not as slow and include new features like being able to purchase permanent licenses for titles received from PlayStation Plus (without needing to let the sub expire, or create a second account); release an emulator for PS1 titles that includes re-rendering at a higher resolution and trophy support; possibly find a way to allow people to use PS1/PS2 discs with an emulator (preferably without downloading, except for the trophy data); re-examine its first-party line-up, possibly investing in more of its legacy IP, more in Japan and rethinking announcing titles like Everybody's Golf so far out from release.
Microsoft needs to add more offline support for Xbox One (especially local profiles (not linked to XBL accounts), but achievement notifications and other features would be welcomed); invest more into first-party studios and first-/second-party releases; improve its variety of first-party content; release an Xbox emulator for Xbox One that re-renders games at a higher resolution and supports achievements; rethink its approach to PC gaming, including drastically improving UWP and possibly releasing games on both Steam and Windows Store (and, if one can dream, GOG); reduce its minimum order quantity for physical releases on Xbox One; and move even closer to Sony and Nintendo with its approach to indie games.
