Given that every player bought the game with the ability to play in any of the three modes, forcing "Open only" might just cause some players to leave in disgust.
Sounds like a method of providing more targets for the PvP minority.
Solo (without Wings) is not necessarily easier than Open.
You are entitled to your opinion, of course - just as Frontier are - and Frontier set the game design, in relation to player freedom of choice on which mode to play in while, at the same time, affecting and experiencing the single shared galaxy state, over four years ago and released the game with these features intact over two years ago.
As Frontier have acknowledged the oft speculated, i.e. Frontier are well aware that the majority of players do not get involved in PvP, I doubt that the game will be significantly modified to cater to a minority whose behaviours can cause the majority to lose enjoyment in the game.
What I would really wish is that they would just get on with it. Flip the switch so to speak.
For the time being just make PVP flagged in open. If they can ever get a good fair and just Crime and Punishment system into place, then maybe turn it back on. In the meantime they have lost many potential long term players and investors into ED. There are people who still refuse to buy Horizons because the original game isnt yet balanced correctly.
Perhaps if they just did this sooner rather than later, then they may attract a new crowd of players and another source of revenue. I know 5 people who could come back instantly if they flagged PVP until a proper system is put in place. Thats just me. I am sure there are others who have the same story and would let their disenfanchised friends know that the game has been made more bearable.
CQC was the answer for the PVP crowd. It has leader boards and ranking. It has everything they need to feel better about themselves. Instead they gave kids giant magnifying glasses and set them loose upon the game.
Not to mention the fact that the amount of people who have quit or wont purchase the game because of said griefing community is in excess of the griefing community itself. A very small group of players is causing a net loss in player base and revenue. It doesnt seem smart to me.
CQC covers the PVP aspect and Flagged Open would cover an legal concern that griefing community might attempt to bring forth. Make it a flagged system and get it over with. The core game is never and will never be balanced between players because it is too complex.