I use a 2014 rMBP. I need to keep Virtual desktop client running all through the day, Outlook for corporate email, and Safari for everything web-based. I can go

I use a 2014 rMBP. I need to keep Virtual desktop client running all through the day, Outlook for corporate email, and Safari for everything web-based. I can go though 70% of my day without needing to plug in. I really really really wish Apple add little more capacity so I don't need to be anxious about spending a work day on the move.