Topic: Beating a dead horse
The idea that increasing the beta reward will make people log in and play to attack a beta outpost is preposterous. If they were playing already but never leaving alpha it might make some sense perhaps but they are not. They have already gone. Making beta more lucrative will do absolutely nothing to bring these people back, it will just reward the people who are already there. Your list of changes for the remainder of this year have merit in some cases but show a complete lack of forward vision (they don't have a coherent ideal behind them) and distressingly will not make the game more attractive to old or new players.
Really at this point you have three options:
1) Address the reason's why people have left in a big enough package or changes so that it has enough of a flavor change to want to come back
2) Make small changes in the hope that you can change the leaver - new player ratio and build your playerbase over time
3) Create a new influx of players alongside enough changes to keep them in the game to create a stable population that can organically grow
Point 1 wont work. There isn't enough goodwill left to bring back the numbers you would need and the game cannot be changed enough to keep them if they did. This will not happen.
Point 2 is also never going to happen. Even if every new player stayed from now onward it would be several YEARS until you had a sustainable population.
Point 3 is the only option. The problem is your out of big things to throw at people. this leaves you with a bucket with holes in trying to keep the titanic afloat but I still after all these years think you do have some hope left. If I were in your unenviable position i'd go with:
Create a game worth playing:
> Full wipe of assets and skills
> Full rebalance of weapons and mechs / bots with an emphasis on retasking old never used stuff to look like new never had stuff
> Rebalance of risk reward
> Finish of the PvE changes
Bringing in new people:
Make the game FTP limiting skills to a maximum of 5 and making sure things like epriton mining, base building and mk2 bots can only be used by paid accounts (make them use a level 6 skill)
Create a reasonable income:
bring back the monthly sub at $10 for premium with the skill cap lifted and a +30% modifier to asset accumulation for premium users
Possible cash shop for PvP ammo / Mk2 stuff (with no skill requirement) and bot colours
Don't get lynched by the natives
Give people who have purchased the game 12 months premium WITHOUT the 30% bonus and a 50% discount for twelve months on credits
You've heard it a million times, people have told you over and over but the game is still able to be saved but absolutely not in the way your going (or have been going the last year). The existing playerbase will NEVER grow (the game is free for these guys and they still dont play), you need an influx and to keep them.