I think CCP considered this idea. If I remember this correctly, they told that "SP pool" was a solution they discussed.

So, they obviously didn't like it. Why? I think because 27k SP cap is quite small and they want everyone to play every day instead of playing just one day.
If you receive 10k SP every match, it's only 16 matches to get weekly cap. This is easily done in one day. Therefore if SP pool is implemented, there won't be enough reasons to play every day as you can easily reach the weekly cap in one day.

Also, if I understand this right, by getting passive SP booster you get about the same amount of SP by not playing at all as a player who grind every day, but without any boosters.

This is tough, yes, but get real, DUST is a business project which must provide some income.

Added this to my above post:

And for the argument of what about those players that come 6 moths later or 1 year later to game?

My opinion is though luck. And more to the point is this misconstruded opinion that one needs to 'catch up' in SP to the max levels to be competetive.

No they don't.

All you need is to have certain ammount of SP to level those critical skills that give +X% dmg, +XHP and weapon of choice proficiencie skill. These skills are 'core skills'.
After one has trained these up, it's all about ones versatility and adaptability to different situations in battlefield.

In other words, low SP charachters compete with spceialication. High SP charachters have versatility advantage in battle, but not advantage of superior gear. (Once one has leveled up those 'core skills')

So lets say you play dust for a year and someone else starts to play a year later, will that player start earning a years worth without getting capped, or is it once the week cap hits they've lost out, sorry if its a stupid question, trying to get my head around this roll over business...

Off topic but... Does anyone remember Cingular Wireless?

Yeah. That.

All of that would be negated if we just go back to the weekly cap but keep the same math for SP accumulation we have now. You get lower SP per match so you hit the cap slower than we did before, but at the same time you could reach the cap any time that week if you put in enough effort.

The whole issue would be resolved however if you have an overall global cap starting from the day you make your new character. If you miss a week or two due to some emergency, you will still be getting around 6k SP per match, but don't reach the cap until you reach the amount of SP you would have had if you hadn't missed that week or two. You'd never reach the level of people who have been around from the beginning, but you would always be able to make up for SP you missed.

Of course, this has all been said over and over, but I still see no CCP response.

Issue with this 'global cap' as suggested above is that, it leads to situation where if one wants to do things in optimal way then all 3 char slots need to be used, even tho one only uses 1 char.
Because if one didn't create those 2 others one would be missing out SP accrual to those chars. Those alts would be there for no other reason than to just-in-case.

New players coming in should be separated by the matchmaking system. Thus making them equal with their counterparts.