I did it. I wouldn't do it again. Not worth the hassle. Also re-building is a bitch.
What this guy said.
Sorry if I would go too much into details. It took me a very long time to learn to EU play properly, and in some domains (like hunting high hp mobs) I am still learning. I have my account for 11 years. I honestly don't remember how many times I chipped out. Mostly because I used to also farm some skills (psychotropy e.g. before MF update or mining skills until about 2009).
But I do remember reunlocking (from various stages, 2 times from complete 0) coolness about 6 times. 1 time I couldn't bear it anymore and bought in a couple of skills.
Worth mentioning that almost always the money went to clicking amps on condition or mining stupidly, sort of rage quit. Once every year and a half or so.
I don't know what level I could have been now if I would have been patient. 30 wep engineer? 60-70 prospector and miner? 60-70 on hit and dmg on almost everything? 40 evader? F* knows in MF? And it doesn't really matter, "what if" thinking sucks. But what is important is I missed ton of opportunities. SGA, TEN, all migrations, all mayhems, all events on Arkadia, whenever an opportunity existed above lvl 30, I missed it.
Financially, is not worth it. Nowadays if you don't find a quick trick to farm something exotic (while keeping for yourself whatever other is growing), skill farm is dead and buried. Just to empty your avatar as a sort of revenge to MA for perceived misdoings or because of your own disappointment will not change things. Take a break, take a step back. We all come back. There is no such thing as quitting Entropia, once you got the taste.
Is true that rebuilding ava is interesting and things always change and so on, but after some time it gets boring. You don't want to go again through that.
Examine what you don't like (maybe you spend too much money, maybe you spend too much time, maybe you get too nervous too fast or who knows what personal reasons, can be so many possibilities) and address that particular issue. Don't punish your ava by pulling out hard worked skills for so little gain that it will be even more depressing.
Best wishes!