Each airline has its positives.
Charter- well paid lh/sh best of both worlds but frowned upon and hard work
BA LHR= SH or LH Well paid
BA LGW= SH/LH Lower paid than LHR and charter but faster promotion
VS= only LH good consessions poor pay, better promotion than charter and BA
Low cost= SH only, very fast promotion, at home every night
Like I said each has points that suits someone better than others.
There will always be things we can change within our respective companies and things we cannot, we all need the wisdom to realise what that is. Every company has perks the others dont and I hate this saying but cannot word it any more diplomatically if you dont like it move on!
Virgin will never pay what BA do ever comparing the two is like comparing chalk and cheese! their pay structure and conditions stem from the good old days and they have retained most of them, it is easier to keep a good thing than get a good thing especially in todays markets.
There is no company that is 100% perfect for anyone, just companies close to it. My advice is find yours and stick to it.
If you want the glamour of constant long haul and to be able to say "I work for Virgin Atlantic" then stay, If you want a big increase in salary or terms and conditions then go to BA LHR or if you want even faster promotion go to EZY