well is it possible to have more than 1 rank 5 ability by using "sell all" function?

yes of course. either sell all, or save up some points while leveling up.

<=== *plays her soldier/medic with lazarus grenade, satchel and downed fire*

EDIT: ^ apparently you can

Yup, same as two posters above me! I use downed fire, laz nades and the gatling turret

Yes, sadly.

I saved my ability points from level 19 and bought Gatling Turret and Satchel Charge.

I'd rather have it impossible to save ability points. Defeats the purpose, since you can get all 5 Rank 5 abilites. You can skip the Universal if you wanted to.

However, in the process you miss out on some other wonderful abilities... in my opinion. You end up a jack of all trades, master of none

Just don't use all your points as you are leveling up like a kid in a candy store? My first character has 2 or 3 ranked 5 abilities and I never respeced him. My second character I respected because I choose an ability just to get an achievement.

It's a shame they did this.

I don't think you should be forced to buy abilities before going up a rank, but you SHOULD be prevented from overindulging in high-level ones - a cap on Rank 5 abilities, or the game not "counting" you as Rank 5 until you're down to that last point.

It shouldn't have been too hard to code in, honestly, but I guess that was too much to ask.

Although, as mentioned, it does prevent you from being quite AS good at everything else you could be doing.

Yes, I agree. So what if you have every rank 5 ability? You can't be as good as the other guy with more abilities in the class. I am, however, spending some of the extra points I have on flashbang and satchel charge. I'm a light operative and I wanted to spend my extra points on something that could be useful to my team in certain situations while still fitting with my concept of a get-in-get-out sabatour.