I think space engine has as much gameplay as Elite's, Elite you simply hold down a trigger or button until your scanner goes off, then face the celestial body and it automatically scans, providing data. In Space Engine you go to the planet, and data is provided for you on the side regarding the body.
I'm interested to know what would make exploration more interesting for you?
For me it would be about finding planets with potentially emerging civilizations and setting up bases or stations of exploration where you get rewarded for recovering artifacts, for monitoring their development, for discovering new species and selling them (simple cargo which varying rarities and therefore values), about finding the remains of wars recent or ancient, with ships floating in space with cargo's to take, salvage and lore. It would be nice to set up 'mini stations' that you can use yourself, with partial docking, fuel stores, cargo stores etc that could be pulled with you like a trailer (reducing jump capabilities and speed but greatly increasing how deep you can go into space). Would be interesting to find races of humans that were just sending probes into space and things like that. Things that made it seem more like a living universe rather than an expensive eye candy show ... with less eye candy than Space Engine.
Combine that with other features like setting up mining platforms or drone mining, extra salvaging methods, trading involving actual players, construction of ships through materials bought on the commodities market or through mining, the construction of fittings, setting up companies for trading, employing NPC staff or player staff to help you, corporations and alliances, player run factions that work for control of a system, players able to gain reputation from your system and trade through your market place. Micromanagement of your own infrastructure.
The 'Capitalism' within the game is pretty lacking let's be honest. I can't help but wonder whether the game was designed with children in mind and that's why it was kept simple. Because the older I get, the more complicated I like my games. The game is neither challenging nor complicated, it's beautiful and has a brilliant base to work on. But it really does need filling up with some actual content now if it is going to appeal to me in the long term.
Not to mention my powerline adapters are on the frizz at the moment so I can't actually play with being disconnected every 30 mins or so.