What’s the trouble then?
Alphas allow you to play the game. They also allow you to do that for free. But CCP needs to charge for the development and maintaince of the game. So something has to give.
Looking at the injector market, it seems that players value skill points above of all else. You already can run a full Omega account for almost free once you have 5.5M SP and if you are willing to efficiently train, extract and sell your SP. Maybe that means there is room for making alphas more powerful, but it also kinda undermines your claim that more players will play the game.
Personally, I don’t think F2P with benign microtransactions is a viable model for an unbalanced, competetive PvP game like Eve. I’m not sure why CCP started down the path following the industry given how unique the core concept of their game is. I’m not even sure the blatant selling of power they are doing with Skill Injectors is long-term viable, at least not without some more significant work on tiering the game so there is fun to be found for all power-levels of players.
But more to your op, I think alphas will always have to be hamstrung. Not just because of the potential for abuse - industry skill for example like PI will always be restricted as they can scale with infinite free acounts and make income while logged out bypassing the “one alpha login” rule that is a major part of what makes them at all balanced. I think it is more workable to allow alphas access to more power when it comes to PvP and destruction, but for industry, they probably already are too useful and useful to those seeking to cheat at the game. But that is hard to do in a sandbox game like this one.
So no, I don’t think less restrictive alpha ability is the path forward, at least not yet or without other changes. And I am also not convinced it will attract more players. If this is more about your experience, I suggest you just set up a SP farm with your account and bypass the alpha restrictions that way.